Question #4: Which sentence is a run-on sentence? A. Because she had no collar, I did not know if she belonged to a family or was a stray kitten. B. First, I decided I would make sure that she had food and water and a place to stay. C. The small kitten was walking aimlessly around the yard I decided to help her find her home. D. The next thing I did was make signs, and I posted them around the neighborhood.