The correct answer is B. During the prewriting stage, it is important to come up with a theme for the story.
When you are prewriting, you are deciding on what you actually want to write about - in this stage, you should think about the topic, the themes, the characters, and give your story an outline that you are going to decorate with details later on.
A is incorrect because both can be long or short, depending on your inspiration. C is incorrect because it is the other way round. D is incorrect because you decide on this during the prewriting stage, not after.
Answer:
The answer is D because without a theme, you won't have a story
Explanation:
