Choose the answer choice that gives a correct reason for using a comma (or commas)

D

Explanation:

Well, A has to be an answer because, think of this example;

"But, he did have a great time at the beach afterall"

B- to separate 3 or more words. This one too because i could say;

"Cats and dogs"

BUT,

"Marley had dogs, cats, and birds."

C- When using introductory phrases like;

"Furthermore, cats are better because..."

So its D because all of them are a correct way to use commas.

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