Command of Evidence on the Digital SAT
Accurate ≠ correct: the "directly" rule
Command of Evidence questions test whether you can identify which piece of evidence directly addresses a stated claim. The key word is directly. Many answer choices are factually accurate but irrelevant to the specific claim.
Example question types:
"Which finding, if true, would most directly support the researchers' hypothesis?"
"Which choice best describes data from the graph that support the conclusion?"
"Which quotation most effectively illustrates the claim?"
Universal strategy: define the claim in your own words before looking at the choices. Ask yourself, "What kind of evidence would make this claim stronger (or weaker)?" Then match.
The three patterns
1. Supporting evidence (textual)
Find the quotation, finding, or statement that directly backs up a claim. Wrong answers describe real content from the passage but miss the specific relationship the claim requires.
2. Undermining evidence
Find the evidence that weakens or contradicts a hypothesis. Same logic as supporting, opposite direction — you need the choice most inconsistent with the claim.
3. Charts and graphs
Read the passage's conclusion first, then find the data observation that matches it. Multiple choices may cite accurate numbers, but only one speaks to the claim. Accurate ≠ correct.
The three-step approach (supporting evidence)
- Identify and rephrase the claim. If it's in complex academic language, simplify it. You can't evaluate evidence unless you know exactly what it needs to prove.
- Predict what kind of evidence would help. Before reading choices, ask: what would make this claim more convincing? A specific example? A comparison? A contrasting case?
- Match your prediction to the choices. The option closest to your prediction is almost always correct. Wrong answers are accurate but off-topic.
Specific qualifiers matter most. If a claim says "not just X, but Y," the correct evidence must address Y specifically. If a claim names a particular group (Latina authors, urban birds, Casarabe people), the correct evidence must be about that group, not a similar one.
The evidence strength scale
Not every piece of evidence supports a claim equally. Every answer choice falls onto one of four positions:
Strong support — directly addresses the claim with matching evidence. The right answer.
Weak support — touches the claim but addresses only part of it, or relies on a weak proxy.
Irrelevant — accurate information that doesn't connect to the specific claim.
Undermines — actually contradicts the claim. (On undermining-evidence questions, this is what you want.)
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Common mistakes
Picking an answer that's accurate but off-topic
The most common trap. The choice describes real content from the passage — a real finding, a real fact — but doesn't address the specific claim. Always test: does this evidence make THIS claim stronger (or weaker)?
Matching the right group with the wrong effect
If the claim says 'Latina authors were inspired to write about their own youth,' evidence that 'Latina authors were compared to' Cisneros doesn't prove inspiration. Comparison isn't causation. Both parts of the claim must be matched.
Picking a 'partial match'
If the claim has two conditions (Latina + own-youth, urban + reproduction, etc.), choosing evidence that satisfies only one condition is wrong. Both parts of the claim must be covered.
Reading data points without checking the claim
On chart/graph questions, the SAT puts every answer choice's numbers in the chart — they're all accurate readings. Only one addresses the specific claim. Read the claim first, THEN scan the data for what matches it.
Practice problems
6 problems adapted from College Board released questions and internal Prepiii sets. Click each one to reveal the solution.
1While attending school in New York City in the 1980s, Okwui Enwezor encountered few works by African artists in exhibitions, despite New York's reputation as one of the best places to view contemporary art from around the world. According to an arts journalist, later in his career as a renowned curator, Enwezor sought to remedy this deficiency, not by focusing solely on modern African artists, but by showing how their work fits into the larger context of global modern art and art history.
Which finding, if true, would most directly support the journalist's claim?
- As curator of the Haus der Kunst in Munich, Enwezor organized a retrospective of Ghanaian sculptor El Anatsui's work, one of the largest art exhibitions devoted to a Black artist in Europe's history.
- In the exhibition Postwar: Art Between the Pacific and the Atlantic, 1945–1965, Enwezor brought works by African artists such as Malangatana Ngwenya together with pieces by major figures from other countries, like US artist Andy Warhol and Mexico's David Siqueiros.
- Enwezor's work as curator of the 2001 exhibition The Short Century showed how African movements for independence from European colonial powers profoundly influenced work by African artists of the period.
- Enwezor organized the exhibition In/sight: African Photographers, 1940 to the Present to demonstrate the broad range of ways in which African artists have approached the medium of photography.
Click to reveal solution →
While attending school in New York City in the 1980s, Okwui Enwezor encountered few works by African artists in exhibitions, despite New York's reputation as one of the best places to view contemporary art from around the world. According to an arts journalist, later in his career as a renowned curator, Enwezor sought to remedy this deficiency, not by focusing solely on modern African artists, but by showing how their work fits into the larger context of global modern art and art history.
Which finding, if true, would most directly support the journalist's claim?
- As curator of the Haus der Kunst in Munich, Enwezor organized a retrospective of Ghanaian sculptor El Anatsui's work, one of the largest art exhibitions devoted to a Black artist in Europe's history.
- In the exhibition Postwar: Art Between the Pacific and the Atlantic, 1945–1965, Enwezor brought works by African artists such as Malangatana Ngwenya together with pieces by major figures from other countries, like US artist Andy Warhol and Mexico's David Siqueiros.
- Enwezor's work as curator of the 2001 exhibition The Short Century showed how African movements for independence from European colonial powers profoundly influenced work by African artists of the period.
- Enwezor organized the exhibition In/sight: African Photographers, 1940 to the Present to demonstrate the broad range of ways in which African artists have approached the medium of photography.
Click to reveal solution →
Answer: (B) In the exhibition Postwar: Art Between the Pacific and the Atlantic, 1945–1965, Enwezor brought works by African artists such as Malangatana Ngwenya together with pieces by major figures from other countries, like US artist Andy Warhol and Mexico's David Siqueiros.
The claim's qualifier: "not by focusing solely on modern African artists, but by showing how their work fits into the larger context of global modern art." The evidence must show African art placed alongside art from other countries.
(B) is the only choice describing African work mixed with non-African artists. (A), (C), and (D) all describe exhibitions about African artists alone — accurate but missing the global-context qualifier.
2Sandra Cisneros's 1984 novella The House on Mango Street made a lasting impact on US literature. Its depiction of Mexican American culture inspired later authors to examine their own heritage within their fictional works. Also influential was the book's portrayal of the main character, Esperanza, during a pivotal year of her youth. This insightful depiction of a preteen girl encouraged authors who, like Cisneros herself, are Latina to use fictional works to examine experiences from their own youth.
Which statement, if true, would most strongly support the bolded claim?
- In interviews, a number of Latina authors say that The House on Mango Street inspired them to write about their own adolescence in their novels.
- In published writings, several prominent authors who are not Latina say that reading The House on Mango Street influenced their approach to writing fiction.
- The House on Mango Street has sold over six million copies and is one of the most commonly read books among high school and university students in the US.
- Since 1984, new novels about young Latina characters by Latina authors have often been compared to The House on Mango Street.
Click to reveal solution →
Sandra Cisneros's 1984 novella The House on Mango Street made a lasting impact on US literature. Its depiction of Mexican American culture inspired later authors to examine their own heritage within their fictional works. Also influential was the book's portrayal of the main character, Esperanza, during a pivotal year of her youth. This insightful depiction of a preteen girl encouraged authors who, like Cisneros herself, are Latina to use fictional works to examine experiences from their own youth.
Which statement, if true, would most strongly support the bolded claim?
- In interviews, a number of Latina authors say that The House on Mango Street inspired them to write about their own adolescence in their novels.
- In published writings, several prominent authors who are not Latina say that reading The House on Mango Street influenced their approach to writing fiction.
- The House on Mango Street has sold over six million copies and is one of the most commonly read books among high school and university students in the US.
- Since 1984, new novels about young Latina characters by Latina authors have often been compared to The House on Mango Street.
Click to reveal solution →
Answer: (A) In interviews, a number of Latina authors say that The House on Mango Street inspired them to write about their own adolescence in their novels.
The claim has two conditions: Latina authors AND their own youth. Only (A) hits both.
(B) targets non-Latina authors — wrong group. (C) is about sales — irrelevant. (D) shows comparison but not inspiration — comparison isn't causation.
3Plants like potatoes, tomatoes, and soybeans are susceptible to bacterial wilt disease caused by Ralstonia solanacearum. A team led by Zhong Wei studied whether other microbes in the soil might influence whether plants get the disease. The team sampled soil around individual tomato plants over time and compared the results of diseased plants with those that remained healthy. They concluded that the presence of certain microbes in the soil might explain the difference.
Which finding, if true, would most directly support the team's conclusion?
- Tomato plants exposed to Ralstonia solanacearum in laboratory conditions developed bacterial wilt at high rates regardless of soil composition.
- Soil samples from healthy tomato plants contained significantly higher concentrations of a specific bacterial species not found in the soil of diseased plants.
- Bacterial wilt has been observed in tomato fields across many different climate zones and soil types.
- Older tomato plants developed bacterial wilt at lower rates than younger plants in the same field.
Click to reveal solution →
Plants like potatoes, tomatoes, and soybeans are susceptible to bacterial wilt disease caused by Ralstonia solanacearum. A team led by Zhong Wei studied whether other microbes in the soil might influence whether plants get the disease. The team sampled soil around individual tomato plants over time and compared the results of diseased plants with those that remained healthy. They concluded that the presence of certain microbes in the soil might explain the difference.
Which finding, if true, would most directly support the team's conclusion?
- Tomato plants exposed to Ralstonia solanacearum in laboratory conditions developed bacterial wilt at high rates regardless of soil composition.
- Soil samples from healthy tomato plants contained significantly higher concentrations of a specific bacterial species not found in the soil of diseased plants.
- Bacterial wilt has been observed in tomato fields across many different climate zones and soil types.
- Older tomato plants developed bacterial wilt at lower rates than younger plants in the same field.
Click to reveal solution →
Answer: (B) Soil samples from healthy tomato plants contained significantly higher concentrations of a specific bacterial species not found in the soil of diseased plants.
The conclusion: certain soil microbes might explain the healthy-vs-diseased difference. (B) directly supports it — a specific microbe is abundant in healthy plants' soil and absent in diseased plants' soil. (A) contradicts the conclusion. (C) and (D) are about climate and age — not soil microbe composition.
4A team of behavioral economists hypothesized that increasing the visibility of energy use (such as displaying real-time electricity consumption on smart meters) leads households to reduce their energy consumption. The researchers plan to test this hypothesis by installing smart meters in 500 households and tracking their energy use over 12 months.
Which finding, if observed, would most directly undermine the team's hypothesis?
- Households with smart meters consumed slightly more energy on average than those without.
- Smart meters were installed in homes of varying sizes and incomes across the study.
- Some households reported finding the smart meter displays confusing during the first month.
- Energy consumption is influenced by many factors, including weather and household size.
Click to reveal solution →
A team of behavioral economists hypothesized that increasing the visibility of energy use (such as displaying real-time electricity consumption on smart meters) leads households to reduce their energy consumption. The researchers plan to test this hypothesis by installing smart meters in 500 households and tracking their energy use over 12 months.
Which finding, if observed, would most directly undermine the team's hypothesis?
- Households with smart meters consumed slightly more energy on average than those without.
- Smart meters were installed in homes of varying sizes and incomes across the study.
- Some households reported finding the smart meter displays confusing during the first month.
- Energy consumption is influenced by many factors, including weather and household size.
Click to reveal solution →
Answer: (A) Households with smart meters consumed slightly more energy on average than those without.
The hypothesis: visible energy use → reduced consumption. Evidence of increased consumption directly contradicts the hypothesis. (B) is about study setup — neutral. (C) is about user experience — irrelevant to consumption. (D) is a general statement that doesn't test the specific claim.
5Researchers studying urban tree cover and summer temperatures collected data from 50 city blocks across a major metropolitan area. They found that blocks with tree cover above 30% had average summer afternoon temperatures of 78°F, while blocks with less than 10% tree cover averaged 87°F. Blocks with intermediate cover (10–30%) fell between these values. The researchers concluded that increasing urban tree cover could significantly reduce summer afternoon temperatures.
Which data point from the study most directly supports the researchers' conclusion?
- The 9°F difference between high-cover blocks (>30% trees) and low-cover blocks (<10% trees).
- The total number of blocks sampled (50) across the metropolitan area.
- The fact that data was collected during summer afternoons rather than year-round.
- The presence of intermediate-cover blocks (10–30% trees) in the sample.
Click to reveal solution →
Researchers studying urban tree cover and summer temperatures collected data from 50 city blocks across a major metropolitan area. They found that blocks with tree cover above 30% had average summer afternoon temperatures of 78°F, while blocks with less than 10% tree cover averaged 87°F. Blocks with intermediate cover (10–30%) fell between these values. The researchers concluded that increasing urban tree cover could significantly reduce summer afternoon temperatures.
Which data point from the study most directly supports the researchers' conclusion?
- The 9°F difference between high-cover blocks (>30% trees) and low-cover blocks (<10% trees).
- The total number of blocks sampled (50) across the metropolitan area.
- The fact that data was collected during summer afternoons rather than year-round.
- The presence of intermediate-cover blocks (10–30% trees) in the sample.
Click to reveal solution →
Answer: (A) The 9°F difference between high-cover blocks (>30% trees) and low-cover blocks (<10% trees).
The conclusion: more tree cover → significantly cooler. The 9°F difference between high and low cover directly demonstrates a significant temperature reduction. (B) and (D) are about methodology, not the temperature claim. (C) is about timing, not the cover-temperature link.
6A historian argues that the spread of printed pamphlets in the 17th century enabled scientific ideas to reach a much broader audience than handwritten letters had previously allowed.
Which finding, if true, would most directly support the historian's claim?
- Records from major scientific societies indicate that meeting attendance grew substantially during the 17th century.
- Estimates show that the average pamphlet published in 1670 reached approximately 50 times the readership of a typical handwritten scientific letter from the same period.
- Many of the most influential scientific works of the 17th century were originally published in Latin.
- Printing presses were expensive to operate, and only a small number existed in major European cities.
Click to reveal solution →
A historian argues that the spread of printed pamphlets in the 17th century enabled scientific ideas to reach a much broader audience than handwritten letters had previously allowed.
Which finding, if true, would most directly support the historian's claim?
- Records from major scientific societies indicate that meeting attendance grew substantially during the 17th century.
- Estimates show that the average pamphlet published in 1670 reached approximately 50 times the readership of a typical handwritten scientific letter from the same period.
- Many of the most influential scientific works of the 17th century were originally published in Latin.
- Printing presses were expensive to operate, and only a small number existed in major European cities.
Click to reveal solution →
Answer: (B) Estimates show that the average pamphlet published in 1670 reached approximately 50 times the readership of a typical handwritten scientific letter from the same period.
The claim: pamphlets reached a broader audience than letters. (B) directly compares the two and shows a 50x reach advantage — exactly the relationship the claim asserts. (A) is about meetings, not printed materials. (C) is about language — tangential. (D) actually weakens the claim (printing was limited).
Frequently asked questions
What's the key strategy for command of evidence questions?
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What are the three types of command of evidence questions?
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Why does 'accurate' not equal 'correct' on these questions?
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What if I can't decide between two answer choices?
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How do I handle chart and graph evidence questions?
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