I think it's C) repetition
Conflict avoidance is a person's method of reacting to conflict, which attempts to avoid directly confronting the issue at hand. Methods of doing this can include changing the subject, putting off a discussion until later, or simply not bringing up the subject of contention.
Nixon's purpose was when he created the Vietnamization Policy, and Kennedy's purpose was when he created the Peace Corps.
D : the structure of "Gumption" is sequential, while the structure of "To Build a Fire" is problem & solution.