The correct answer is C) Modred, Arthur, and two of Arthur’s followers.
As night falls, the men that are left standing on the battlefield are Modred, Arthur, and two of Arthur’s followers.
"Le Morte D'Arthur" is a novel written by Thomas Malory, where he retells the story of the famous King Arthur and the main characters Lancelot, Guenevere, and Merlin, the magician. This work of Malory is one of the most recognized and has been the influence of many other writers when they write their own versions of the classic story.
At the end of the heroic story, a hand rising from the lake pulls the sword of Arthur and King Arthur finally gets to Avalon in a boat accompanied by ladies wearing a hood.