It is foreshadowed that Susan is at a zenith, a highpoint in her life. This, however seems to be the last highpoint that she will ever be at, insinuating that the rest of her life was much more depressing and less exciting.
You are right. the answer is D
It emphasizes Kennedys dissatisfaction with the present state of the country
Answer:
a) It takes into account human history and human behavior.
