It is ment to persuade D. because they are giving you reasons why you should join the navy.
The answer happens to obviously be letter C and here is why, a connotation is a choice in words in a form of literature that can give a stronger feeling to the sentence. For example instead of saying scary i could say horifying and that would be a stronger, negative connotation of fear, based on the fact that c is the only negative one, "Crowded and sticky."
Answer: Supporting detail.
Explanation: This sentence adds to the topic of telescopes helping people see the universe.
A narrative essay would most likely go in chronological order so that the reader can see the order that events happened.