Answer:
Sarah worked like Cinderella until all of her chores were done.
Explanation:
An allusion is a figure of speech that represents a vague reference to a person, place, thing, or event from an unrelated context. Usually, allusions aren't explained by the author. It's up to the readers to figure out their meaning.
The sentence that contains an allusion is the second one. Sarah, who is working hard on her chores, is compared to Cinderella. The reader should know the story of Cinderella to fully understand this sentence.
The rest of the sentences don't contain an allusion. The first one tells about events from the fairytale Cinderella, the third one gives us a fact about the fairytale, and the fourth one simply mentions the movie.
This is why the second option is the correct one.
