12. Which of these is a run-on sentence? A. I thought about what he'd said soon I realized he was right. B. Before lunch, I played volleyball; after lunch I did again. C. You and I and the whole team will go. D. I went home and ate and ate.
A) is a run-on because it could be broken up into two complete sentences, but there is no punctuation indicating that there are two separate thoughts. :)
