The best answer for this question would be:
Alvarez grappled with the issue of writing a novel about a dangerous subject.
A central idea focuses on the dominant impression of a story in which a general truth of the story is found within it.
I think C but I'm not sure maybe it A
The Three men's lives were saved as they were held above water by the monster which they discover to be a modern submarine, named the Nautilus, as they climb inside they come upon the submarines captain and his crew, his name is Captain Nemo (as i recall).
When someone has everything they want there is always something else they find they “need”, the human race is never satisfied.