I believe the answer is A.) because the way the selection builds up would allow for a sudden meeting in a field so A.)farquhar may unknowingly walk into a trap. <span />
The story set during the American Civil War. The reader knows from the excerpt that this soldier is a Federal Scout who disguised himself. However, Farquhar doesn't know this fact. He is lured by this soldier into a trap which the soldier asks from him a favor about the burning the bridge. The correct answer is the first option.