Answer:
A
Step-by-step explanation:
In this passage, we learn the way a veteran feels after he returns from Vietnam. The war in Vietnam was extremely unpopular and hated, and this seems to have cause a rejection of the veterans as well. In this excerpt, we can see the difficulty that this veteran had wrapping his head around this fact. He tells us that he had followed his duty and believed to have behaved responsibly, only to come back to hate and rejection.