What is the central idea of a literary passage and how is it supported?

• A. The central idea is the main message or point the author conveys; it is supported by key details, events, and examples throughout the text.
• B. The central idea is the author's biography; it is supported by historical context.
• C. The central idea is the plot twist; it is supported by suspenseful scenes.
• D. The central idea is the language style; it is supported by sentence length and diction.

Answer: (A)

The central idea is the main message or point the author is trying to convey, and it’s built up with evidence from the text. In a solid passage, the author develops this main idea by including key details, events, and examples that point back to that message. So the central idea isn’t just one moment or a fancy phrase; it’s the overall takeaway the reader should understand after reading, and the supporting details are what show and strengthen that takeaway as the text unfolds.

This is why the best answer fits: it states the central idea as the main message and notes that it’s supported by details, events, and examples spread throughout the text. It isn’t describing the author’s life, which would be background unrelated to the passage’s message; it isn’t focusing on a single plot twist, which is just part of the story, not the whole point; and it isn’t about the language style, which describes how the text is written rather than what the text is saying.