Which choice best states the main idea of the text? Thistles are a kind of weed found in North America. Although thistles are unwelcome in gardens and on farms, weeds like this do provide some benefits. For example, they can be helpful to pollinators.

A variety of plants grow in North America.

Removing weeds is a pleasant task.

Some gardening techniques may increase weed growth.

According to the text, what did Ambopteryx and Yutyrannus have in common? When people think of dinosaurs with feathers, they typically think of winged dinosaurs, such as the bat-like *Ambopteryx*. However, many dinosaurs that didn't have wings also had feathers on their bodies. For instance, research indicates that the wingless, large *Yutyrannus* likely had feathers.

They both were hunted by the same predator.

They were both wingless dinosaurs.

Reading & Writing · Information and Ideas

Central Ideas and Details

Identify the main idea or a specific detail in a short passage.

What the SAT Tests

Central-ideas-and-details questions ask you to either find the main point of a passage or the specific detail that answers a prompt. The passages are short — 25 to 100 words — and the right answer is always directly supported by the text.

Key Tips for Central Ideas and Details

Paraphrase the passage in your own words before reading answer choices.
Eliminate answers that are true in the real world but not supported by this passage.
Central idea = author's claim; details = support for the claim.

How to recognize Central Ideas and Details questions

Look for Information and Ideas signals in the stem: evidence, purpose, transition, grammar rule, vocabulary-in-context, or synthesis task.
Before reading choices, state what the correct answer must do in the sentence or passage.
The official College Board skill label is Central Ideas and Details; use that label to drill only this question type.

Fast solving workflow

Name the question type before reading the choices; the SAT repeats the same jobs with different passages.
Predict the job of the correct answer in plain English, then compare choices against that job.
Require proof from the text or sentence structure. A choice that sounds reasonable but is not supported should be eliminated.

Common traps

Choosing a true statement that does not answer the exact question.
Overextending an inference beyond what the passage supports.
Ignoring contrast words such as however, although, or nevertheless.

Sample Central Ideas and Details Questions

These are real practice questions pulled from our Digital SAT bank. Try each one before reading the highlighted correct answer.

Question 1 · Easy
Which choice best states the main idea of the text?
Thistles are a kind of weed found in North America. Although thistles are unwelcome in gardens and on farms, weeds like this do provide some benefits. For example, they can be helpful to pollinators.
- A. Some weeds can be beneficial.Correct
- B. A variety of plants grow in North America.
- C. Removing weeds is a pleasant task.
- D. Some gardening techniques may increase weed growth.
Question 2 · Easy
Which choice best states the main topic of the text?
When people think of dinosaurs with feathers, they typically think of winged dinosaurs, such as the bat-like Yi qi. However, many dinosaurs that didn't have wings also had feathers on their bodies. For instance, research indicates that the wingless, herbivorous Kulindadromeus likely had feathers.
- A. Dinosaurs with feathersCorrect
- B. Animals without feathers
- C. The most valuable fossil
- D. Bird species
Question 3 · Easy
According to the text, what did Ambopteryx and Yutyrannus have in common?
When people think of dinosaurs with feathers, they typically think of winged dinosaurs, such as the bat-like Ambopteryx. However, many dinosaurs that didn't have wings also had feathers on their bodies. For instance, research indicates that the wingless, large Yutyrannus likely had feathers.
- A. They both were hunted by the same predator.
- B. They were both wingless dinosaurs.
- C. They both could fly.
- D. They both had feathers.Correct

Practice Central Ideas and Details Questions

Drill central ideas and details questions in the Digital SAT Reading & Writing question bank, or take a full-length practice module to see how this skill appears under test conditions.

Practice block	What to do	Move on when
Warmup	Solve 10 untimed central ideas and details questions and write the rule used for each.	You can explain 8 of 10 without reading the explanation.
Timed drill	Solve 20 filtered bank questions at real module pace.	Accuracy is at least 80% and misses are not repeating.
Transfer	Take a mixed timed module and mark each Information and Ideas miss.	The skill still holds up when mixed with other question types.

FAQs

What is Central Ideas and Details on the Digital SAT?

How hard are central ideas and details questions?

Central Ideas and Details questions appear at every difficulty level on the Digital SAT Reading & Writing section. The hardest versions gate access to the top scaled scores in the hard Module 2.

How do I practice central ideas and details?

Use the 1600.now question bank to filter for central ideas and details questions, solve at least 20 in a row, and review every miss with the written explanation.