If you want to feel really well, you should get enough sleep.

A. Properly constructed sentence
B. Lacks parallel parts
C. Comma splice
D. Misplaced words
D

I don't think so. Although I don't like general sentences with "you," I think A is the best answer.

What does your book say about misplaced words?

D is wrong

Well, if you want to feel really well, you should get enough sleep. And by enough sleep, I mean at least 10 hours of uninterrupted snoring and drooling.

D. Misplaced words

The correct sentence would be: "You should get enough sleep if you want to feel really well."

D. Misplaced words

The sentence "If you want to feel really well, you should get enough sleep" is a properly constructed sentence. It does not lack parallel parts or contain a comma splice. Therefore, the correct answer is D, which states that the sentence has misplaced words.