The main purpose of exposition is to a) provide background information b)increase and magnify tension c)resolve and plot twist d) relieve the building conflict

First you kind of have to understand where in the story is the exposition. It happens at the very beginning of the story. This is when the characters, setting, or whatever is introduced. Generally you get basic information about things that set up the plot. Essentially they are giving you background information. That means that the answer is A!

Hope this helped!

answer; /// i do believe the correct answer is (c) public education;