Answer:
d) Cut off its head and brought it to Hrothgar as a trophy.
Step-by-step explanation:
he lair becomes brighter after Grendel's mother dies, and Beowulf is able to inspect his surroundings. He finds Grendel's body and, to take further revenge, he decapitates the corpse. ... The Geats return to Heorot Hall, taking Grendel's enormous severed head with them.