The answer to this question is... A.
Fidel Castro was a dictator of cuba, but his "official" title was prime minister. he overthrew the Cuban government which is why he is considered a dictator (and he has all the power).
You must know the population in that state. The number of representatives is based on the population of each state, or "congressional district."
The main difference between a nation and a state is that a nation is an example of an imagined political entity in which all representatives from states confer, which of course never truly happens.