To write an effective ending to your essay, you should B. END ON A NOTE THAT'S LIKELY TO STICK IN THE READER'S MIND.
This is to ensure that your essay will still occupy the minds of your readers even after reading it.
Events or thoughts that readers can relate to your essay's end note will also bring back the ideas or thoughts you have stated in your essay.
#3 i believe. It is the only answer that isn't too informal and also flows/transitions well into the paragraph.
I believe the answer is A, I had this same question on a test last year, and I'm pretty sure that's the answer.
characteristics determine genre