Which sentence does not contain any errors in comma usage? A. They have heard crickets in the garage in the basement and in the backyard. B. They have heard crickets in the garage, in the basement, and, in the backyard. C. They have heard crickets in the garage, in the basement, and in the backyard. D. They have heard crickets in the garage in the basement, and in the backyard.
"C. They have heard crickets in the garage, in the basement, and in the backyard" is free from comma errors. The "and" at the end doesn't need a comma after it because it introduces the last item on the list.