when separating items in a list, a writer should\n○ end the list with a colon.\n○ separate the items with…

when separating items in a list, a writer should\n○ end the list with a colon.\n○ separate the items with colons.\n○ add a comma after the \and\ before the last item.\n○ add a comma before the \and\ before the last item.

when separating items in a list, a writer should\n○ end the list with a colon.\n○ separate the items with colons.\n○ add a comma after the \and\ before the last item.\n○ add a comma before the \and\ before the last item.

Answer

Brief Explanations:

In English grammar, when listing items, a comma is added before the "and" that precedes the last item in the list. For example, "apples, bananas, and oranges".

Answer:

D. add a comma before the "and" before the last item.