Final answer:
King Duncan remarks on the execution of the Thane of Cawdor and bestows the title on Macbeth. The terms 'fair' and 'foul' are thematic, suggesting complex moral judgement in the play.
Step-by-step explanation:
Malcolm does not directly describe the Thane of Cawdor at his execution in William Shakespeare's play, Macbeth. Rather, King Duncan remarks on the execution of Cawdor, indicating that he shall no longer deceive them, and announces that Macbeth will be given the title of Thane of Cawdor as a reward for his bravery in battle. The adjectives 'fair' and 'foul' are thematic in the play, with characters often wondering about the morality and truth of their actions and the situations they face. Given that the Thane of Cawdor was a traitor to King Duncan, his execution might be considered 'fair' in the context of the play's moral universe. However, the play continually blurs the lines between what is perceived as 'fair' or 'foul.'