Answer: C) what happened after Sir Bedivere threw the sword.
Explanation: Imagery is a literary device that consists in the use of figurative language or detailed descriptions in order to evoke the senses of the reader and to create a mental picture. In the given excerpt, the imagery (clothed in whit samite, mystic, wonderful, etc) is used to describe what happened after Sir Bedivere threw the sword (Excalibur) into a lake (following the instructions of Arthur).