Which one of the following sentence contains a double negative?

A.She did not like skating so she would not go to the party.
B.James couldn't hardly stay awake after
his surgery.
C.No one could tell me that he wasn't afraid.
D.Sherrill wouldn't tell me that I didn't win the contest.
Answer:B
Am I CORRECT

yes

correct. could not hardly....

Isn't it confusing to have both the poster and responder named "Anonymous?"

Yes, you are correct. The sentence that contains a double negative is B. "James couldn't hardly stay awake after his surgery." In this sentence, the words "couldn't" and "hardly" both have negative meanings, creating a double negative.