Answer:
The correct answer is option A. The King of Denmark.
Step-by-step explanation:
Hearing that The king of Denmark, Hrothgar, was in trouble, Beowulf decides to go help him. He wanted to help him because Hrothgar had helped Beowulf's father, Ecgtheow when he was just a baby.
Another reason was that Beowulf wanted to protect the Danes from Grendel, and perhaps by protecting them, Beowulf would gain some respect and honor for his actions.
Both reasons were valid for Beowulf to come to help the King of Denmark, therefore, that is the correct answer.