I believe the answer is A
The struggle or clash would be the conflict(C) because conflict is a disagreement or a clash of ideas.
The correct answer is the main idea
Silence gives people a feeling of loneliness, helplessness ,hopelessness, and death. Hearing sound gives people the feelings of happiness, hopefulness and life. Silence is unpleasant and noise is more ongoing.
Answer: McCandless arrived in an area of Lake Mead called Detrital Wash on July 6, 1990, and got caught in a flashflood that got his engine wet. He buried the rifle he was carrying and burned all his money. The narrator cites McCandless's diary to substantiate these details