I'd say B and D. Elementary school reports don't necessarily equate to knowledge of a subject (and research on the branches of government doesn't help you know <em>how</em> to govern), so A is out. C is nice, but popularity and charm do not a leader make, he might have ulterior motives to being as such, maybe taking advantage of the power? B and D show things he has done that would give him useful skills in the position.
Here are a couple of options to choose from as to why Fitzgerald chose the title to be metaphoric of Paris:
1. <span>It represents the ruins of American "royalty" in Paris
2.</span><span> Paris is living in wealth that will end in destruction.
In either case, it has to do with wealth that no longer exists or is about to be depleted because of overuse and hedonism. Just like Babylon disappeared, this place is going to be gone soon. </span>
4. vignettes is the answer!
You should use different types of figurative language