Answer: d. Beowulf is passing on the rulership of Geatland to Wiglaf.
When Beowulf is about to face the dragon, Wiglaf and his comrades want to help him. However, Beowulf wants to face the dragon alone. While he is able to succeed in killing him, the dragon also takes his life. As Beowulf is dying, he passes his gold necklace to Wiglaf, who had come back to help him kill the dragon. The passing of the necklace symbolizes the passing on the rulership of Geatland.