1) D. It compares the number of New York commuters to an insect invasion.
2) C. It demonstrates, in the speaker's view, that Loeb was foolishly obsessed with the crime.
3) C. “. . . a drowsy afternoon in the great rustling oaken silence of the reading room of the Public Library, with the book elevator (like an old water wheel) spewing out books onto the trays.”
