The correct answer would be B. A non-voter is someone who chooses not to vote even though they are eligible to do so.
I think it was the Truman Doctrine which is send TTTTroops to Vietnam to stop the spreading of communism.
The majority of these documents relate to two seminal events in which Madison played a major role: the drafting and ratification of the Constitution of the United States (1787-8) and the introduction (1789) in the First Federal Congress of the amendments that became the Bill of Rights