The correct answer is:
C. Grendel cannot match Beowulf's strength, and he knows he will lose the fight.
Grendel was a monster threatening King Hroðgar, his wife Wealhþeow, and their court. Beowulf left to Zealand determined to pay his father's debt. Grendel attacked them during the night and Beowulf fought back with his bare hands and broke off Grendel's arm, which would later be attached to the wall of Heorot.