Final answer:
The inference best supported by the text is that Unferth doubts the stories about Beowulf are true, showing skepticism towards Beowulf's past deeds. Option C is correct.
Step-by-step explanation:
The inference about Unferth that is best supported by the text is that he doubts that the stories about Beowulf are true. In the context of the Old English epic poem Beowulf, Unferth is a character who challenges Beowulf's reputation and accomplishments.
This indicates a sense of skepticism and possible envy, but the most direct evidence from the text aligns with him questioning the authenticity of Beowulf's heroic tales.
Early in the poem, Unferth speaks out in Heorot and accuses Beowulf of being boastful and questions his victory in a past swimming match with Breca. This reflects doubt and jealously over Beowulf's stories and the glory that accompanies them.
The best inference about Unferth that is supported by the text is option C. He is envious of all the attention that Beowulf receives. This can be inferred from the text because Unferth shows signs of jealousy towards Beowulf's achievements and popularity.