25 POINTS PLEASE HELP Read these short passages from "The Dancing Partner." During which passage does the story's main theme become clear?

a.) A stream of blood showed itself down the girl's white frock, and followed her along the floor. The affair was becoming horrible.

b.) Then for a couple of weeks he kept much to his factory, and was very thoughtful and busy, though prone at unexpected moments to break into a quiet low laugh, as if enjoying a joke that nobody else knew of.

c.) Come, which of you ladies may I introduce him to as a partner? He keeps perfect time; he never gets tired; he won't kick you or tread on your dress; he will hold you as firmly as you like, and go as quickly or as slowly as you please; he never gets giddy; and he is full of conversation.

d.) As she grew more familiar with the uncanny creature, the girl's nervousness wore off, and she entered into the fun of the thing.