This is my answer. "Bertie strongly dislikes his Aunt Agatha because she treats him poorly" is the best summary of the central idea in the story.
Answer:
C
Explanation:
its clear and open to one answer
indefinite means lasting for a long time
difficult means hard
confusing means hard to comprehend; not clear
therefore the answer is C
The answer is shown above
I am pretty sure it is d. (see my comment above)