Although Boyhood is primarily the coming-of-age story of Mason, its main character, it is also a story that will move anyone _____ has experienced adolescence or parenting.

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

Answer: (A)

Choosing the right relative pronoun to introduce a clause about people. In this sentence, the clause that follows describes anyone, and within that clause the verb has experienced needs a subject. That subject is the relative pronoun. Since the subject refers to a person, who is the natural choice. Whom would only be correct if the pronoun were the object of a verb inside the clause, which isn’t the case here. Which is used for things or ideas, not people. That can be used for people in informal speech, but who is preferred in standard English when referring to people. So, who fits best, making the sentence read: anyone who has experienced adolescence or parenting.