An outline will help a lot. For example if you were Writing a paper on the French revolution it would look like this.
French Revolution
I. Intro parahgraph
II. Reasons Why the war started
A. the unequal system of taxation
B. The way that the peasants lived a life of poverty while the Nobles
lived a life of luxury just because of their title.
And so on
Answer:
C(was upset about always acting as a peace maker
First, Montresor must hide his feelings of hatred for Fortunato. He does this so successfully that throughout the entire plan, and even at the end, Fortunato has no clue that Montresor wants to kill him.
Second, Montresor chooses Carnival time to enact his plan; this guarantees that Fortunato will not be immediately missed, buying Montresor some time if he needs it. Brilliant.
Third, Montresor must be able to bring Fortunato to his empty house. To do that, he does the simplest and most clever thing he can think of to do during Carnival time