Acording to the events that were taken as a basis for the setting of the story, If you wanted to support the idea that Beowulf is an epic hero, you might best note that he embodies the ideal of Anglo-Saxon society. This option seems to be the only relevant. Hope you still need the answer, because this one us really helpful.
If I were to awnser this I would of chose c because if the mother is comparing the rock to her courage it means she doesn’t need the courage anymore it’s like she already has it.