Answer:
They have the same word root
Explanation:
The word root is part.
Maybe just read the story a few times more and make a guess on what you think is the best answer?
The answer here is probably B, but you didn’t provide the text so I can’t be sure.
I believe The dream is a warning, but also Grendel is saying that he and Hrothgar are connected. Grendel thinks that religion is pointless/meaningless and that it just follows a bunch motions.