Which pronoun correctly completes the sentence?

I am not sure who is following us, but it might be ___?

A.him
B.she
C.their

I know "him" sounds correct...but I just needed to be sure...??

4 answers

Yes. That is correct.
Thank you
You're both wrong.

The correct pronoun is "she."

"She" is a predicate nominative following the linking verb "might be."
Ms. Sue is correct, it is "she."