Choose the correct item (Relative pronouns & adverbs).

1. A vet is someone who treats sick animals. (A - who) 2. The girl who lives here is Nikki's sister. (C - who) 3. I met a girl whose mother is a famous actress. (B - whose) 4. Tom is very reliable, which is why I like him. (C - which) 5. That's the clinic where Christina works. (A - where)