A. I think Frank might be too busy he likes to make people think he's smart. B. I would talk to Frank if I knew him, but people don't ever talk to him. C. Jerry told me he likes June, but
Hank likes Julie better. D. I'm not a fan of wrestling, but Leslie is.
The sentence that is an example of a run-on sentence is: I think Frank might be too busy he likes to make people think he's smart. The answer is option A. This sentence is a run-on sentence because it contains two independent clauses, but are not separated by using the proper punctuation mark.
