I am pretty sure the answer is D.
Answer:
A real war and a "war" of fighting to grow old and successful
Explanation:
Based on the excerpt, Robert Louis Stevenson was reminiscing about his days as a younger man and the internal conflicts he had.
In the first paragraph, he talked about the real war he witnessed where he heard the "loudness" of the battles and the "pain of men's wounds". He also talked about another internal "war" which had to do with "slavery of competition", toiling for years and which culminated to fighting to be old and successful.
Mccain's essay was very exaggerating to me and managed to extend my concept of patriotism, thus leaving the concept more complete and efficient. Before reading the essay, I believed that patriotism is related exclusively to the feeling of love for the country, within that feeling it was not correct to criticize and not support certain elements, but just to love the country unconditionally. MacCain's essay showed me that criticism of the country is part of patriotism, because it is through criticism that we recognize the defects that our society has and that need to be changed. This is able to motivate us to fight for a better country. Striving for improvement represents love for the country and that represents patrotism.