15. Which one of the following is a run-on sentence?



A. Jerry told me he likes June, but Hank likes Julie better.
B. I would talk to Frank if I knew him, but people don't ever talk to him.
C. I'm not a fan of wrestling, but Leslie is.
D. I think Frank might be too busy he likes to make people think he's smart.

I think this one is D

Right.

To determine which one of the following options is a run-on sentence, we need to understand what a run-on sentence is.

A run-on sentence is a sentence that combines two independent clauses (complete thoughts) without the necessary punctuation or conjunctions to link them properly.

Let's look at each option to identify if any of them contain a run-on sentence:

A. "Jerry told me he likes June, but Hank likes Julie better."
Option A is not a run-on sentence because it contains two independent clauses that are connected with the conjunction "but."

B. "I would talk to Frank if I knew him, but people don't ever talk to him."
Option B is not a run-on sentence. It also contains two independent clauses that are connected with the conjunction "but."

C. "I'm not a fan of wrestling, but Leslie is."
Option C is not a run-on sentence. It consists of two independent clauses connected by the conjunction "but."

D. "I think Frank might be too busy he likes to make people think he's smart."
Option D indeed contains a run-on sentence. It combines two independent clauses without any punctuation or conjunction between them.

Therefore, the correct answer is option D.