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

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

Verified Answer :

Hagrid

Among the sentences that is
considered a run – on is Jerry told me he likes June, but Hank likes Julie
better. The answer is letter D. A run –on sentence is a sentence having two independent
clauses.