I would say pessimist. In "The Great Gatsby", Gatsby never ends up getting Daisy. He loved her, but all of his efforts were wasted. She never loved him back. I hope this helps!
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.
The answer is D. Olivia’s decision to mourn her brother and not marry for seven years.