B - it suggests that parent's words were held in very high regard
The father had high aspirations for his son and told him what to do - the son willingly followed his father's directions, knowing that he was wise and only wanted what was best.
The best answer for this question is the first one, "not about emotions but about defending the nation." Rather than listening to anger or other "excited" feelings that we have, we must operate in wars using reason, calmness, and rationality in order to make the best decisions. Decisions that come out of excited feelings can end in more destruction. The purpose of war is to protect the rights of people, in this case the American people. Hope this helps.
