Answer:
Provides a connection to the first sentence.
Explanation:
In the first sentence it talks about how to act or react to you college professors. It sets the main point of what the following text could or is. As for the second sentence it gives an extension to the idea of how you should act or react and or behave.
D.) Anne Bradstreet was never married
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'.