Which sentence should be edited for pronoun clarity?

Question

A. The teacher told the class that she wanted their papers to be turned in by the end of the day on Friday.
B. While Cindy and Patricia were walking down the hall, she noticed a sign on the teacher's door.
C. The librarians received the box of new books, and they immediately opened and unpacked it.
D. On the way to the post office with Donald, Gerald realized that he forgot to check his email.

Answer 1

B. While Cindy and Patricia were walking down the hall, she noticed a sign on the teacher's door.

This sentence should be edited for pronoun clarity because "she" could refer to either Cindy or Patricia, making it unclear who noticed the sign. To improve clarity, you could rewrite the sentence to specify which person saw the sign.