Question

Which sentence uses commas correctly? A. Fried chicken, biscuits, potato salad and corn were served at the barbeque. B. Please take off your coat, sit down and open your textbook. C. The couple decided to go bowling, eat dinner and take a walk in the park. D. Jules ate pizza, salad, and yogurt for lunch.

Answer 1

D. Jules ate pizza, salad, and yogurt for lunch. 
  This is because A is correct but they made a tiny error, which is to add a comma before and. B is not correct because they had to add it before and C. is also the same problem but in D they used commas before and. HOPE THIS HELPS!!!!!

Answer 2

Sentence D uses commas correctly.