Answer:
C
Explain
Beecause i tried it and got it right
This is an exert from the book that tells all the animals he's had:
<span>Smiley had rat-tarriers, and chicken cocks, and tom- cats, and all of them kind of things, till you couldn't rest, and you couldn't fetch nothing for him to bet on but he'd match you. He ketched a frog one day, and took him home, and said he cal'klated to edercate him; and so he never done nothing for three months but set in his back yard and learn that frog to jump. ChaCha!</span>
I think its A. A crowd of Theban citizens. but i'm not 100% sure
This is A, a 'sentence'. Because it doesn't need a punctuation, so its omission here doesn't make it a run-on sentence.