Question

Which sentence contains an error in the use of apostrophes?

A.
I thought the red sweater was yours.

B.
Who's books are those?

C.
You can’t listen to everyone's opinion, or you'll get confused.

D.
The tree lost one of its branches in the storm.

Answer 1

B) Who's books are those?

"Who's" is a contraction of "who is." The correct sentence would be "Whose books are those?"