Answer:
The answer is C. a complete sentence.
Step-by-step explanation:
A. well I wouldn't say it is a run-on sentence because a run-on sentence is like this "I like to eat ice cream it is so yummy I would eat an ice cream every day if I want to."
B. I don't think it is a fragment, it has a subject "cat", it has the verb
"went meow." The sentence runs smoothly. "While it may be punctuated to look like a complete sentence, a fragment cannot stand on its own." But this sentence can stand on it's own, so not a fragment!
C. I think it would be a complete sentece, you have a subject, a verb, and it runs smoothly. You can understand it well too!