Question

To construct an effective ending to any type of essay, you should

Answer 1

B cause then they'll remember your paper out of hundreds

Answer 2

I believe the correct answer is B. end on a note that's likely to stick in the reader's mind.
If you want your essay to stick out from a bunch of other similar essays, you need to have a good 'punchline.' There has to be something in your conclusion which will make your readers remember the essay if you want to differ from a sea of other writers.