Question

She is one _____ we can trust.

• A. that
• B. who
• C. whom
• D. which

Answer 1

Answer:

C. whom

The relative pronoun refers to a person and is the object of the verb trust.

• We can trust her. (object)

• Therefore, the correct relative pronoun is whom.

✅ She is one whom we can trust.
❌ She is one which we can trust. (which is used for things)
❌ She is one that we can trust. (that is possible in informal English, but in grammar exercises whom is preferred)
❌ She is one who we can trust. (who is the subject form)