Answer: I'd say this segment of the article will mostly attract Young Adults to adults. most teens or younger I doubt could care less what's being said here.
Everyone in Elie’s cattle car is not familiar with the sign
For 1 i'm not sure but if I were you I'd say dark. For 2 it's a. because that's the begining of a sentence. And I don't understand 3.
Most likely the first sentence contains the main idea of a paragraph.