Errors in the use of punctuation marks - Comma
I think the answer is D.
A.In his autobiography, Benjamin O. Davis, Jr., who in 1970 retired from the Air Force as a three-star general, describes his efforts to gain professional recognition for himself and for other black servicemen.
B.Some insects that belong to the phylum Arthropoda are grasshoppers, bristletails, silverfish, and firebrats.
C.Anne Sullivan, Helen Keller's teacher, was herself partially blind.
D.Waiter please bring some more bread.