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...??

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."

To determine the correct pronoun to complete the sentence, let's analyze the sentence and consider the pronouns that can be used to refer to a person who might be following "us."

The subject of the sentence is "who," which is a relative pronoun used to refer to a person or people. In this case, it refers to the person who might be following "us."

Since the sentence is asking for a pronoun, we need to select the objective form of a pronoun that can refer to a person.

The options given are "him," "she," and "their."

Option A: "him" is an objective pronoun that is used to refer to males.
Option B: "she" is a subjective pronoun that is used to refer to females. It does not fit in this context because it is not in the objective form.
Option C: "their" is a possessive pronoun that is used to refer to multiple people. It does not work as a direct object pronoun in this sentence.

Therefore, the correct pronoun to complete the sentence is option A, "him."