enjoyment becuase it's the only synonym there and the analogy is using synonyms in this case.
The answer would be B. Pretentious.
Answer: It would be ocean's
Explanation: In this context the apostrophe show ownership, or WHOSE waters became choppy (I know an ocean is a WHAT and not a WHO but phrasing it like this in my mind always helped me). Without the apostrophe it would be the plural form of OCEAN.
That would be a graph. Graphs are used to present calculations, basically anything that is numerical can be represented on a graph.