The correct response is:
They both lack a rhyme scheme.
While there are poetic elements present in both "Beowulf" and "The Lady of Shalott," they do not adhere to a consistent rhyme scheme. "Beowulf" is an epic poem, and "The Lady of Shalott" is known for its lyrical qualities, but they do not both fit into the definitions of ballads or sonnets. Additionally, while dramatic structure can be found in both, it is not a defining element they share.