Which sentence best supports the main idea in a paragraph?

• A. A sentence that introduces a new topic
• B. A sentence that restates the topic in different words
• C. A filler sentence with vague language
• D. The sentence that directly links facts to the central claim

Answer: (D)

The main idea of a paragraph is best supported by a sentence that directly ties the given facts back to that central claim. This kind of sentence shows exactly how the details justify or illustrate the main point, making the paragraph’s argument clear and cohesive. It isn’t introducing a new topic, which would distract from the main idea; it isn’t simply restating the topic in different words, which adds little new support; and it isn’t a vague filler sentence, which leaves you unsure how the details relate. By linking the evidence to the claim, this sentence helps readers see the logical connection and understand why the main idea holds.