Well, the answer should be D.
Why?
Because not every story doles the character learn something. But in every story there is a conflict.
Answer:
The answer is B because the rest of the questions don't mention mistakes and don't mention fun either
C. To inform. Hope this helps :)
The correct answer among all the other choices is unparallel structure. This is the type of error in the sentence. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.