Which statement best describes the central idea of a text and its key details?

• A. The central idea is the setting; key details are character names.
• B. The central idea is the conclusion; key details are dates and numbers only.
• C. The central idea is the main point the author wants you to take away; key details reinforce it.
• D. The central idea is the tone; key details are adjectives describing mood.

Answer: (C)

The main idea is the main point the author wants you to take away, and key details are the pieces of information that support and develop that point. This statement is the best fit because it captures how a text communicates its message: a central idea, or main point, is reinforced and explained through details like evidence, examples, and description.

For example, if a text argues that regular exercise improves health, the central idea is that exercise benefits health. The key details would include research findings, statistics on energy or heart health, and descriptions of simple activities that illustrate how exercise helps.

The other options mix up what a central idea or key details do: the setting describes where or when events occur, not the main message; the conclusion is part of the text’s structure, not the core idea; the tone and mood describe attitude, not the primary takeaway; dates and numbers alone aren’t the overarching point.