Madison supports a republican government because he believes that
a. men of integrity who put the greater good first would be elected
b. only people not associated with factions will vote in elections
c. ordinary citizens would be excluded from powerful factions
d. the majority of the electorate will oppose the formation of factions

The correct answer is:  

A.men of integrity who put the greater good first would be elected

Explanation:

James Madison wrote the Federalist paper No. 10, where he defined factions as a group of citizens with common interests and political opinions against the rights of other citizens and the entire community.

Madison explained that to prevent factions in a society there were only two options, two destroy the citizens' liberty (which was worst than factions), and to make each citizen think the same (which was not possible). So the only option left was to control the effects of factions, in order to control its effects, Madison appointed that a pure Democracy where people vote directly for laws could not defend the community from factions, because a majority vote doesn't necessarily represent the best interests for the whole community.

Madison proposed the creation of a large republic to control the effects of factions. In a large republic people could have a variety of interests and opinions, and could elect more competent representatives than in a small republic, he believed that people would elect "men of integrity who put the greater good first".

Madison stated that if a body of representatives with different interests where the ones who voted for laws, it would be easier to act according to the society's interest, and not for self-interest, and even if a majority was found in the body of representatives it would be harder for them to act because of the wider territory.

i believe it was spain