I believe the answer would be D
Your answer should be WHO.
Think of it like this: You wouldn't say "The boy it (a variant of 'which')", because it simply just sounds odd. Instead, you're wired to think "The boy, he (an unknown name, so it would be 'who')".
Answer:
He's in love with someone who doesn't love him back
Explanation:
Benvolio finds out that Romeo is sad because he's in love with Rosaline, but she swore to remain unmarried and not have extramarital sexual intercourse.
Hope this helps, and please mark me brainliest if it does!
Percy is happy to see his mother again after being in the boarding school. However, he hates his stepfather.