The dialogue in "hills like white elephants" focuses on the possibility of a(n)
abortion
break-up
expedition
marriage

The dialogue in "Hills Like White Elephants" focuses on the possibility of an abortion.
A man is talking to his girlfriend about her having a surgery, and although it is never directly stated, it is implied the surgery is actually an abortion. He wants her to have it, and she doesn't, and they are having an argument without even listening to each other - it is futile given that she won't do it, and he wants her to.

The answer is most likely d