A paragraph in an essay and NOT an example of insertion.
Answer: C. suggesting that the appearance of the ghost predicts problems to come
Explanation:
Horatio´s words to Marcellus reflect his fear that the ghost might be an omen of something bad happening in the future.
Bernardo and Marcellus urge Horatio to stay with them so he can see the ghost of Hamlet himself. After Horatio sees the ghost, he claims that, despite not understanding what´s happening, he believes that the ghostly presence can only mean something bad is going to happen.
Topic headings in your outline
So B
Hope this helps!
B. This description sounds most like a foil. They tend to help the main character evolve to something great and has little change in themselves