<span>A small, glittering object not far away caught Rainsford's eye and he picked it up. It was an empty cartridge.</span>
I believe its D. Conclusion as the narrator finally comes to a conclusion of what they have realised.
Building, residence, office
My father visited John Grisham, author of the novel a time to kill, in Oxford, Mississippi.
The creepers in lord of the flies are actually vines that grow all over the island, which symbolize evil.
Such as when the pig is found entangled in creepers, it symbolizes how the boys will also become entangled in evil as they lose civility.