Answer:
D. It reveals that both men, particularly Gates, believe that their situation is dire and that they would rather hurt themselves than allow the wolves to get them
Explanation:
The question is related to the story entitled, "On a Mountain Trail," written by Harry Perry Robinson.
Lines 25-29 happened when the pack of wolves were closing on the narrator (Jack) and Gates. Since, it seemed like there was no choice for them, Gates asked the narrator how many bullets he had left. The narrator replied that he only had "one bullet left." There and then, the narrator knew that Gates had the conviction that they'd rather kill themselves with the bullets before the hungry wolves tore them into pieces. The narrator also knew that this was the right thing to do.
So, this explains the answer.