Which sentence uses commas correctly? A. Yusef, did you forget, this pen? B. Please Sophie wait, for me. C. Where is your hat, Paul? D. Do you know, Lexi where my socks are?

Salutations!

Commas are used to break the sentence up and have a slight pause in the sentence.

The sentence that uses the commas correctly is: Where is your hat, Paul?

Thus, your answer is option C.

Hope I helped (:

have a great day!