What do the barons do during the waiting period?
a. they ask merlin to put the sword under a protective spell.
b. they carry the sword to the archbishop of canterbury.
c. they maintain a guard of ten knights.
d. they take turns providing security.

c. They maintain a guard of ten knights.

Explanation:

In Le Morte d'Arthur, we learn that the barons maintain a guard of ten knights during the waiting period. Le Morte d'Arthur is a work by Sir Thomas Malory that presents several tales about the legendary King Arthur. The work is a combination of the recompilation of stories and the creation of original ones, and it is one of the most important sources of Arthurian literature in English.

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