Which statement about American military capabilities is accurate?

Which statement about American military capabilities is accurate?
 
  A)Since the beginning of the Republic,the superiority of American firepower has always been unrivaled by other states.
  B)For much of its infancy and adolescence, the United States compensated for weak military capabilities by exploiting its geographic advantages.
  C)Although its capabilities have been challenged by rising global power, the military capabilities of the United States have remained unchanged throughout history.
  D)In its infancy and adolescence, the United States relied heavily on naval superiority but has recently abandoned that in favor of land troops.

Question -2-

What motivates most attempts to reform the bureaucracy?
 
  A) accountability
  B) efficiency
  C) politics
  D) polarization

Question -3-

The trend in Mitt Romney's favorability ratings during the 2012 election suggests that negative advertising __________.
 
  A)had no effect on Romney's favorability ratings
  B) was not responsible for Romney's election defeat
  C)was directly correlated to Romney's steep decline in favorability
  D)was directly linked to Romney's loss in the election