For your first question about the fictional portrayal of King Arthur, the best response would be:
C: how magic, myth, and adventure surrounded this king.
This reflects the traditional themes found in Arthurian legend, where magical elements and adventure play significant roles.
For the second question based on the historical passage regarding the actual King Arthur, the two statements that best describe him would be:
A: It is very likely that the person known as King Arthur actually never existed.
D: King Arthur may have been a minor warrior who fought in a few battles against the invading Saxons.
These responses align with the scholarly view that King Arthur may have originated from folklore or historical figures rather than being a singular, fully historical king.