Power exercised through authority means what? A) law enforcement B) a strong national defense C) The majority of the members of a group have given permission for the leaders to have control. D) Common people may have the right to vote but they ultimately have no power.

Option C

Explanation:

In simple words, The phrase authority refers to the governmental legitimacy that confers and explains the dictator's right to use government power; the phrase power refers to the capability to achieve an authorized purpose, either through acquiescence or compliance; thus, authority is the capacity to execute choices. 

Thus, from the above we can conclude that the correct option is C.

dude you should crop your image so only the question shows. but   can you explain it better