What is the main idea?

What is the main idea?

• A. Main idea is a random detail.
• B. Main idea is the central point; supporting details back it up with evidence or examples.
• C. Main idea is the last sentence of the paragraph.
• D. Main idea is the author’s name.

Answer: (B)

The main idea is the central point the author wants you to understand. The whole passage is built around that idea, with details, examples, and evidence used to support and explain it. That’s why the option that states the main idea is the central point and that the supporting details back it up with evidence or examples is the best fit. A random detail isn’t the overall message you’re meant to take away. The last sentence isn’t guaranteed to be the main idea—it can serve as a conclusion, summary, or transition. The author’s name isn’t related to the core message of the passage.

The main idea is the central point the author wants you to understand. The whole passage is built around that idea, with details, examples, and evidence used to support and explain it. That’s why the option that states the main idea is the central point and that the supporting details back it up with evidence or examples is the best fit. A random detail isn’t the overall message you’re meant to take away. The last sentence isn’t guaranteed to be the main idea—it can serve as a conclusion, summary, or transition. The author’s name isn’t related to the core message of the passage.