Answer:
All but the third one.
Step-by-step explanation:
Asking about the setting, characters, and when the story takes place would help the reader understand the story more. If the story took place in the 1900s, then the characters and settings would be different compared to a story in modern day.
"How long is this story?" would be incorrect because knowing the duration of the story does not contribute to the story in anyway. In other words, learning that a story is 5 min long is not important.