B. character is the answer
What's the passage mostly about I think that's what central idea
The sentence that does not contain any punctuation errors is letter C. The cat, on the contrary, loved the tuna fish. The dependent clause "on the contrary" is classified as a nonrestrictive clause, meaning it does not change the basic thought of the sentence even if it is removed. Usually, nonrestrictive clauses are separated from the sentence using commas, or if it's located in the middle of the sentence, a pair of commas is used.
Answer:
I think it must be the main character, because it is the connection between the characters as well as the context of things