I believe the answer is- C!
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In a sentence, there is always a Subject and a Predicate. A subject is the main topic of a sentence, while the predicate is what the subject is pertained to. In the sentence: Relaxing is not as easy as it looks. The subject is Relaxing which is also considered a gerund. And the predicate is 'is not as easy as it looks'.
Answer:
to introduce the claim
Explanation:
I'm a senior, and I've heard my English teacher say this a million times, the purpose of the introduction is to introduce a claim/viewpoint. Yes, you can introduce the author, but that isn't the PRIMARY purpose. The hook goes at the bottom of the introduction, but also isn't the primary purpose. The topic kind of goes throughout the essay.