Final answer:
The phrase from Beowulf is an example of hyperbole, which is an exaggeration used for emphasis within figurative language.
Step-by-step explanation:
The phrase "All of Beowulf's band jumped from their beds" is an example of hyperbole, which is an exaggeration for rhetorical effect. Hyperbole is a type of figurative language that amplifies certain aspects of a narrative for emphasis or to convey strong emotion. In this case, the statement is not meant to be taken literally and it doesn't signify that all members of the band jumped out of bed simultaneously, but rather, it emphasizes their readiness and eagerness for action.