The excerpt helps develop the conflict by illustrating that while Merlin acknowledges the beauty of the woman Arthur loves, he advises Arthur to consider someone who is both fair and good, indicating a conflict between Arthur's emotions and Merlin's pragmatic advice. Arthur's strong feelings complicate the situation, as he is unwilling to leave the woman he loves despite Merlin's counsel.
Therefore, the best answer is:
D. It suggests that although Arthur wants Merlin’s advice on who to marry, Arthur does not listen to his concerns.