Can you post the passage, so I can see it and then give you the answer.
The danger of not respecting the power of nature
Hrothgar asked Beowulf to battle Grendel's mother because the king believed he was the only man capable of dealing with such monsters. This was because Beowulf had earlier succeeded in mortally wounding Grendel. Further, Hrothgar wanted revenge for his close friend.
Answer:
the answer is c. the is the article adjective