They are all right except the first one. All I know is that the first one isn't cavaliers.
D
Emphasis is right because it is to show importance of something that occurred
Answer: the correct answer is
Bob's Big Boy, Wimpy, and other hamburger chains followed, but none has ever reached the success of McDonald's, the world's biggest chain.
Explanation:
The two independent clauses are correctly joined by a comma and the coordinating conjunction but
