Which theme does this excerpt from beowulf evoke?

beowulf
(excerpt)

wiglaf uttered many a right-saying,
said to his fellows, sad was his spirit:
"i remember the time when, tasting the mead-cup,
we promised in the hall the lord of us all
who gave us these ring-treasures, that this battle-equipment,
swords and helmets, we’d certainly quite him,
should need of such aid ever befall him:
in the war-band he chose us for this journey spontaneously,
stirred us to glory and gave me these jewels,

a. hero worship of an unworthy person
b. role tradition plays in instructing people how to live
c. role true leaders play in supporting the people
d. importance of loyalty toward one's king