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).
Answer: sand walls may be ugly ,but the protection of people and property Is more important
I've learned to get along with my brother ever since my father left the family business to he and I.
The first choice has the most reasonable and backed up claim.