Which of the following sentences contains a dependent clause?

A. My mother, who never wastes anything, rinsed and saved the take-out boxes.
B. We were running late, and we had to skip stopping by the post office.
C. I had never been to New York before this spring.
D. You should take an umbrella to the game.

My answer is A, am I right?

Right. A.

Thx

You're welcome,

Yes, you are correct! Sentence A, "My mother, who never wastes anything, rinsed and saved the take-out boxes," contains a dependent clause. The dependent clause in this sentence is "who never wastes anything," because it starts with "who" and is providing additional information about "my mother." Dependent clauses cannot stand alone as complete sentences and rely on the rest of the sentence to make sense.