It's Mr.Tate
Refrence: https://www.shmoop.com/to-kill-a-mockingbird/chapter-17-summary.html
Answer:
E, the importance of seeking help
Hope this helps! :)
"overriding idea" meaning the over all idea, helps with answer.
A.
setting - couldn't be the setting. We're looking for an overall idea of a
fiction story not the background or "theme" , it's the journey through
out the story , its ups and downs.
B.conflict- in stories a conflict has a solution , and a story may have various conflicts. it couldn't be the over all idea.
C.Plot- its the plot because, the plot is whats happening in the story, from conflicts to solutions. The overriding idea.
D.Theme- like I said it's not the theme nor setting.
Answer: C