Which sentence uses a comma correctly?

A comma can correctly join two independent clauses when they are connected by a coordinating conjunction such as “yet.” In D, “The Pyramid of Giza was built thousands of years ago” and “it remains intact” are both complete clauses. The other choices place a comma between parts that should not be separated, such as a noun and its describing clause or a subject and its verb.

AI-written and checked against the verified answer.