The syntax in paragraph 7 serves to-

a. portray American's military as a necessity.

b. portray American's military as a global police force.

c. alleviate global apprehension of increased military might.

d. alleviate national apprehension of impending war.

The best answer for this would be:

c. alleviate global apprehension of increased military might.

Because it talks about the strengths of the military as well as the impending war that is about to come within the country. It solely describes what their strategy is wand what they will do in the war.