C. How are Bob and Derek getting there? Are they taking the car or the train?
This is the only sentence that is grammatically correct.
Answer:
"anyone"
Explanation:
an indefinite pronoun is a pronoun that does not refer to any person, amount, or thing in particular.
Yours is a possessive pronoun. it shows that it is that person's object and in this sentence, it is the other person's car. ANSWER: possessive pronoun