The correct answer is B. disillusionment in a violent world
This is what the major thinks about the marriage and is certainly one of the main themes, not only of Hemingway, but of all modernist writers.
"The farm buildings huddled like the clinging aphids on the mountain skirts, crouched low to the ground as though the wind might blow them into the sea"
This an example of personification. Remember that personification is when something is compared to something else using "like" or "as"