From him Cain sprang every misbegotten thing?

The literary element that is most clearly seen in these lines is Characterization

Explanation:

The Epic poem of "Beowulf" shows the use of characterization in these lines, since it is talking about the descendants of Cain, this lines come during the confrontation with Grendel, this device is used in literature to describe the specific details of a character and this could also show how people react to this features.

1.) is true

2.) is false