the sentences uses brackets correctly are
C) Mary didn't think [much] of Robert because he had "hurt my feelings more than once."
B) Mary didn't think much of Robert because he had "hurt [my] feelings more than once."
Step-by-step explanation:
- B) Mary didn't think much of Robert because he had "hurt [my] feelings more than once."
- C) Mary didn't think [much] of Robert because he had "hurt my feelings more than once."
- The sentences within brackets are used that are not important even if they are eliminated, it will not change the meaning of a sentence.
- Sentences can be written without adding words in the bracket also.