Answer: He makes a proclamation that Arthur is to be King.
Explanation: King Arthur and Sir Accolon of Gaul are entrapped by Sir Damas — They .... Hearing the things, the officers seized Merlin, and carried him before the king by force. .... But in order to do this, and enable him to come to her—for she was shut up in the .... This, therefore, the archbishop did, the Bishop of Canterbury fled .... and took on him to be King of England,