A sentence that restates the main idea is called: A. a clincher sentence.
B. a reason, a fact, an example, or evidence.
C. a topic sentence.
D. a supporting sentence.

C. A Topic Sentence

Explanation:

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A concluding sentence aka a clincher sentence.

Explanation:

A concluding/clincher sentence, is supposed to restate the main idea.

they insisted that there was not enough time to learn everything.  

explanation:

if they were going to steal the answers that is simply because they insisted that there was not enough time to learn everything.  

a. both connotative and denotative.