Choose the sentence that shows the CORRECT use of a comma in a compound sentence. A compound sentence is two complete sentences joined together with a comma and a conjunction.

Sean is an auto mechanic and he doesn’t mind getting dirty, on the job.
The baby kept crying, yet she didn’t seem to be ill.
Citizens can vote at the polls or, voters can use absentee ballots.
The seafood special is fried catfish but, flounder, is also on the menu.

The baby kept crying, yet she didn’t seem to be ill.