This question is incomplete because the options are missing. Here are the options.
A. the storyteller's performance
B. the author's educational background
C. the development of characters
D. the title of the work
The correct answer is C. The development of characters.
Explanation
In a story, the most important aspect is the characters, so to correctly analyze a story you must focus on the characters and their development through the story; the development of the character is a concept referred to the participation of the character in all history and his/her evolution through the story. This is because the story is built from the activities, actions, and thoughts of the characters. So the correct answer is C.