Answer:
Your answer would be D.
Explanation:
A compound sentence joins two or more independent clauses with a coordinator such as and, for, but, or a semi-colon. Independent clauses are made up of two phrases that can stand alone as a complete thought. They are not dependent upon one another, but they put together similar ideas. What is more, they contain three things: a subject, an action, and a complete thought (take 1).
1) I like reading, and I'm buying a new book on Friday
In the sentence above, you can see that the comma is placed after the independent clause (I like reading) and before the coordinating conjunction (and).
