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.
The characters don't say or act suspicious during the interaction,so we can rule out B,and the information they give is just enough to intrigue the reader and give the island a sense of mystery.
