I need english help please

I am having problems with figuring out which one of these sentences is a run on sentence:
A. I went home and ate and ate.
B. Before lunch, I played volleyball; after lunch, I played again.
C. I thought about what he'd said soon I realized he was right.
D. You and I and the whole team will go.

I think it is C, can you please help?

[2006]

Originally Posted by Unregistered

I am having problems with figuring out which one of these sentences is a run on sentence:
A. I went home and ate and ate.
B. Before lunch, I played volleyball; after lunch, I played again.
C. I thought about what he'd said soon I realized he was right.
D. You and I and the whole team will go.

I think it is C, can you please help?

You are right. It should be one of the following:
a)I thought about what he'd said, and soon I realized he was right.
b)I thought about what he'd said; soon I realized he was right.
c I thought about what he'd said. Soon I realized he was right.

I prefer a) because it flows better.