Answer:
An invitation to the prince’s ball arrives.
Step-by-step explanation:
Narrative exposition is a term that refers to the exposure of background information that is of utmost importance to the development of the story. Exposure can be a character trait, an important situation, and even an object, as long as it contributes grandly to a major event in the story. In Cinderella's story narrative exposure occurs when an invitation to the prince's ball arrives at the girl's house. This situation is of utmost importance to the whole development of this fairytale, since it is from this moment on that Cinderella has a chance to find great love and get rid of her stepmother's clutches.