Answer:
The values demonstrated in this decision are: fair play sense and pride
Step-by-step explanation:
Beowulf was a brave, heoric and strong man, when he makes the decision of fighting against Grandel without any weapons he is showing a sense of fairplay because he knows perfectly that Grendel does not use any weapons to fight, so he considers it is unfair to fight using a weapon, it also demonstrates his proud and courage. Everybody knows Grendel is a powerful beast, he is a descendant of the biblical character Cain, so, if Beowulf is able to defat him, he is going to show his power and courage