Answer:
Option C, decrease the effects of factions.
Step-by-step explanation:
The Federalist 10 which was written by James Madison in 1787 is an essay that supported the republican form of government and opposed the direct form of democracy.
In this essay, James explains the threats which may arise in a direct democratic government. Threats like factional control and suppression may arise in a direct democracy because he believes that the largest faction or group will always control the smaller ones.
He did a thorough study in this essay about how majority rights and minority rights overlaps with one another. He argued that increase in population will create new factions and groups ,which in return will reduce the effects of bigger factions as they would be forced to compromise with new factions gradually.