SAT Writing and Language: Command of Evidence 🧠

🧠 Command of Evidence: What Even Is It?

The SAT Writing and Language section tests five broad skill groups, but this guide zeroes in on command of evidence questions. These ask you to decide what details should be kept, added, or deleted to make the strongest possible argument in a passage.

Command of evidence can be trickier than other question types because it's less about grammar rules and more about judgment. You need to evaluate whether information actually supports the writer's point. This guide covers the two main question types you'll see and walks through how to approach each one.

🥈 Types of Questions in Command of Evidence

You'll encounter two categories of command of evidence questions:

1. 📊 Interpreting data presented in informational graphics. Some passages include a chart, graph, or table. You'll need to look at the data and determine which answer choice accurately reflects what the graphic shows and supports the passage's argument. Not every passage has these, so you won't see them on every set of questions.

2. 🧱 Improving a passage's structure, support, and focus. These are much more common. You'll be asked to strengthen a passage by adding relevant details, removing irrelevant ones, reordering sentences, or choosing the best transition. This is the core of command of evidence.

📊 Interpreting Data Presented in Informational Graphics

Some passages come with a chart, graph, or table. The question will ask you to choose an answer that accurately reflects the data and connects to the passage's argument. You want to include data that supports the point being made, not just any number that appears in the graphic.

Here's how to work through these questions:

1. Read the passage and understand its central argument. Before you even glance at the graphic, know what the writer is trying to say.
2. Examine the graphic carefully. Check the title, axis labels, units, and any legend. Understand what the graphic is measuring.
3. Identify what the question is actually asking. It might ask you to find a specific data point, describe a trend, draw a conclusion, or connect the data back to the passage's purpose.

Common things these questions test:

• 👓 Identifying specific data points or values (e.g., the highest or lowest value in a chart)
• 📈 Interpreting trends or relationships between variables (e.g., noticing that as one variable increases, another decreases)
• 💭 Drawing conclusions based on data (e.g., deciding what the data suggests about a broader claim)
• 🫵🏼 Connecting data to the passage's purpose (e.g., choosing which data point best supports the writer's argument)

Sample Question: Interpreting Data Presented in Informational Graphics

Here's a passage excerpt:

"According to recent research, the popularity of different social media platforms among teenagers has been shifting over the past year. Below is a bar graph displaying the percentage of teenagers who reported using four major social media platforms in 2022 and 2023."

Before looking at the bar graph, note what the passage is setting up: a change in percentages from one year to the next. So when you look at the graph, pay attention to which platforms grew, which shrank, and by how much.

Based on the data presented in the bar graph, which of the following statements is supported by the evidence?

A) In 2023, Instagram was the most popular social media platform among teenagers, surpassing all other platforms in usage percentage.

B) The percentage of teenagers using Snapchat decreased from 2022 to 2023, while the usage of Facebook remained relatively constant.

C) Among teenagers, the usage of Twitter experienced a significant increase from 2022 to 2023, making it the second most popular platform in 2023.

D) Overall, the total percentage of teenagers using social media platforms decreased from 2022 to 2023.

Answer A is wrong because while Instagram is more popular than Facebook and Twitter in 2023, it doesn't surpass Snapchat.

Answer B is correct. Snapchat's percentage dropped from 2022 to 2023, and Facebook's usage only changed by about one percentage point, meaning it stayed relatively constant.

Answer C is tempting because Twitter usage did increase, but it's not the second most popular platform. This is why you need to read the entire answer choice carefully before selecting it.

Answer D is wrong because most platforms actually gained users in 2023 (Snapchat being the exception), so the overall total went up, not down.

🧱 Improving a Passage's Structure, Support, and Focus

This is the more common question type. You'll be revising parts of a passage to make the writer's argument clearer and more effective.

Your approach should follow these steps:

1. Read the full passage and identify the main message and purpose.
2. Pay attention to flow. As you read, notice anything that feels awkward, redundant, off-topic, or out of order.
3. Read the question carefully. Make sure you know exactly which sentence it's referring to and what it's asking you to do (add, delete, reorder, revise, etc.).
4. Evaluate each answer choice against the passage's purpose and the specific task in the question.

Here are the main things these questions can ask you to do:

• 🏹 Reorganize sentences within a paragraph for a more logical flow
• 🔗 Improve transitions between paragraphs or sentences
• 🎯 Strengthen the main idea by identifying sentences that don't align with the central argument
• ➕ Add or delete sentences to provide better support or remove irrelevant/repetitive information
• 💁🏽‍♂️ Evaluate supporting evidence and determine if the passage needs stronger examples or data
• 🦞 Improve clarity by revising vague or ambiguous sentences
• 🧶 Eliminate redundancy by cutting unnecessary repetition
• 🧂 Maintain consistent tone throughout the passage
• 🫔 Strengthen concluding statements so the passage wraps up effectively
• 🟰 Combine or separate sentences for better readability
• 🍿 Determine the best placement for a given sentence or piece of information

Sample Question: Improving a Passage's Structure, Support, and Focus

Here's your passage excerpt:

(1) Climate change is a pressing issue that affects all life on Earth. (2) The burning of fossil fuels, deforestation, and industrial processes release greenhouse gases into the atmosphere, trapping heat and leading to global warming. (3) Rising temperatures have a range of consequences, including melting ice caps, rising sea levels, extreme weather events, and disruptions to ecosystems. (4) These impacts not only threaten wildlife and biodiversity but also have profound effects on human communities, such as food and water shortages, forced migration, and increased health risks.

The passage informs the reader about climate change and its effects. Notice that the sentences are numbered, which signals you'll be asked about adding, deleting, or reorganizing details.

The writer wants to add a specific example to support the statement in Sentence 3. Which of the following would best accomplish this?

A) "Scientists predict that by 2050, the Arctic could be completely ice-free during the summer months, resulting in habitat loss for polar bears and other Arctic species."

B) "Climate change is a complex problem that requires global cooperation and immediate action from governments and industries."

C) "The industrial revolution of the 18th century marked the beginning of significant greenhouse gas emissions."

D) "It is important for individuals to reduce their carbon footprint and adopt sustainable practices in their daily lives."

The question asks for a specific example that supports Sentence 3. Sentence 3 lists consequences like melting ice caps and disruptions to ecosystems.

Answer A is correct because it gives a concrete, specific example (ice-free Arctic by 2050, polar bear habitat loss) that directly supports the claims in Sentence 3 about melting ice caps and ecosystem disruption.

Answer B is vague and talks about solutions, not consequences. It doesn't support Sentence 3.

Answer C is about the cause of emissions, not the consequences described in Sentence 3. It would interrupt the paragraph's flow.

Answer D is a recommendation for individual action. It might fit somewhere in a broader essay, but it doesn't support Sentence 3 with evidence. The question specifically asked for a supporting example, not a suggestion. Watch out for answer choices that seem reasonable but don't match what the question is actually asking.

💡 TLDR: Some Final Tips

• 🧠 Trust your first instinct. If you've read the passage carefully and an answer feels right, it probably is. Don't second-guess yourself unless you spot a genuine mistake in your reasoning.
• 🏆 Set realistic practice goals. You won't get every question right, and that's fine. Track how many you're getting correct in practice and aim to improve gradually.
• 📅 Make a study plan and stick to it. Consistent practice with this question type matters more than cramming.
• 😤 Focus on your weak spots. If data interpretation questions trip you up more than structure questions (or vice versa), spend extra time on those.
• 🫵🏼 Always go back to the passage's purpose. The correct answer on command of evidence questions almost always ties back to what the writer is trying to accomplish. If an answer choice doesn't serve the passage's main argument, it's probably wrong.