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Command of Evidence questions are deceptively simple: given a claim, which piece of the text (or which data point) best supports it? The catch: several options will be true and on-topic. Only one proves the specific claim.
Key takeaways
- The question has two parts: a claim and four candidate pieces of evidence.
- Nail down what the claim exactly says before reading the options.
- The right answer directly proves the claim, not just the general topic.
- Two flavors: textual (a quotation) and quantitative (a data point from a graph/table).
What it really tests
Command of Evidence is a matching task: does this specific evidence logically back up this specific claim? Trap answers are true statements supporting a different (often broader or narrower) claim. Precision about the claim is the whole skill. (It pairs naturally with inferences and central ideas.)
An option that’s true and about the same topic but supports a stronger or weaker claim than the one asked. Match the scope of the evidence to the scope of the claim.
Break the claim into three parts
Dissect the claim: subject (who or what it’s about), verb (what’s asserted: increased, caused, declined), and scope (how much, over what period). Winning evidence must match all three. A different group fails the subject; "changed" for a declined claim fails the verb; "some" evidence for an every claim fails the scope. Most traps fail exactly one part.
Try one
A researcher claims that the new irrigation method not only saved water but also increased crop yield compared to the old method.
Which finding, if true, would most directly support the researcher’s claim?
The quantitative flavor
The quantitative variant swaps the quotation for a graph or table, but the logic is identical: read the claim first, then hunt the data for numbers that prove that claim. The traps are accurate readings of something slightly different. Try it:
| Year | Site A bats | Site B bats |
|---|---|---|
| 2019 | 1,200 | 900 |
| 2020 | 1,050 | 950 |
| 2021 | 860 | 700 |
| 2022 | 700 | 720 |
A biologist claims that the bat population at Site A declined in every year of the study, from 2019 through 2022.
Which choice best describes data from the table that support the biologist’s claim?
The method
- 1
Restate the claim
Say exactly what must be true, every part of it ("saved water AND raised yield").
- 2
Predict the proof
Decide what evidence would prove it before reading the options.
- 3
Test each option against the claim
Does this directly prove the WHOLE claim? Eliminate anything proving a different one.
- 4
Match the scope
The winner’s strength and topic line up exactly with the claim’s.
The trap
Picking the most interesting or strongest-sounding fact, even if it proves a claim that wasn’t made.
The move
Pick the fact that maps one-to-one onto the claim as stated, no more, no less.
The four trap flavors
| Trap flavor | What it looks like |
|---|---|
| Wrong subject | Accurate evidence about a different group or study |
| Wrong verb | Shows something exists or changed when the claim says caused or declined |
| Wrong scope | Endpoint or "some" evidence for an "every" claim, or vice versa |
| True but irrelevant | A correct fact that touches no part of the claim |
Drill claim-to-evidence matching with a tutor that makes you restate the claim first.
Practice Command of Evidence →Frequently asked questions
- What is Command of Evidence on the SAT?
- It’s a Reading & Writing question type that asks which piece of text (textual) or which data point (quantitative) best supports a given claim: matching specific evidence to a specific claim.
- What’s the difference between textual and quantitative Command of Evidence?
- Textual asks for a quotation that supports the claim; quantitative asks for a value or trend from a graph or table. Either way, the evidence must directly prove the claim as stated.
- How do I avoid the wrong answers?
- Restate the claim precisely, including every part of it, before reading the options. Eliminate any choice that supports a stronger, weaker, or different claim, even if it’s true.
- How do I read a graph or table against a claim?
- Read the claim first and break it into subject, verb, and scope, then hunt the data for numbers that prove all three. Don’t browse the table first; the traps are accurate readings of a slightly different claim.