Question

The final paragraph of an essay must include
A) a very funny joke.
B) a restatement of the main idea.
C) a new point to support the main idea.
D) a quote from a well-known author.

Answer 1

A restatement of the main idea.  You want to take that last chance to make sure you have made your point.

Answer 2

It must include B) a restatement of the main idea. Doing this sums up the essay nicely by bringing your readers attention back to what the essay was about.