It emphasizes the depth of the speaker's depression and insanity. It drives home the point that the speaker will forever be miserable and alone.
The most likely correct answer to me would be D
Simile. In the sentence "Shining like a cascade of brown waters" It compared her hair to water and used the word "like"
Answer:
7. There isn’t
8. any
9. some
10. There are
11. a lot of
Hope this helped you! :)