Which of the following is a run-on sentence?

AWhile the rain was drenching at times, the fans were dedicated and refused to leave.
BThe game will be called if the storm continues, the weather is dangerous.
CThe players continue to work on both hitting and fielding, allowing them to improve both skillsets.
DThe game was tied at halftime; each coach gave his team a pep-talk.

Verified Answer :

B is a run on sentence. It has two different sentences separated by a comma instead of a period.

Answer:

B. The game will be called if the storm continues, the weather is dangerous.

Explanation:

A run-on sentence is a sentence consisting of two or more independent clauses (group of words having a subject and a verb and that expresses a complete thought) that are not separated by a period, semicolon or joined by a conjunction ( E.g. and, for, but, yet, in adittion) and that, instead, are connected improperly with a comma or without any type of punctuation.

Sentence B is an example of a run-on sentence because both independent clauses (The game will be called if the storm continues and the weather is dangerous) are improperly separated by a comma when they should be separated by a period or a semicolon instead.