Which phrase is an example of hyperbole?

The phrase "I am so hungry I could eat a horse" is a clear example of hyperbole because it uses exaggerated language to emphasize the speaker's extreme hunger. Hyperbole is a figure of speech that involves exaggerated claims not meant to be taken literally, often for the sake of humor or emphasis. In this case, the notion of eating an entire horse is an unrealistic and humorous exaggeration that conveys just how hungry the speaker feels.

The other options represent different figures of speech: "She runs like the wind" employs a simile, drawing a comparison using "like"; "The stars danced in the sky" personifies the stars, attributing human actions to them; and "The classroom was a zoo" uses metaphorical language to suggest chaos and noise, comparing the classroom's environment to that of a zoo without an explicit comparison marker. None of these examples rely on exaggerated claims as hyperbole does.