Hopefulness is the answer
The answer is B, as it helps not only to keep the reader's attention but to also inform or persuade them more to a topic. In addition, it is also sometimes used to help convey a specific emotion, thus helping the reader get more into the text.
I think it’s B. Because when ur looking and reading the essay you can mark it up and make notes on the answers to the question. Then when you look back when answering the essay question you have all the notes you made before