37.

Answer and Explanation

Your Answer is

Correct Answer is C

Explanation

Othello is an apposition of the tragedy. Iago is the subject of the sentence, the villain of the tragedy Othello is the apposition of the subject, because Iago is a person's name, so the apposition is separated from the main body by commas before and after, and C is correct.

Item A/B: Because the tragedy is a specific situation, there is no sign between the apposition and the modified word.