Final answer:
In Shakespeare's 'Macbeth', it is (D) Duncan who cries out in his sleep while being murdered by Macbeth, contributing to the themes of guilt and the chaotic atmosphere of the play.
Step-by-step explanation:
During the scene in William Shakespeare's play Macbeth where Macbeth is killing King Duncan, it is Duncan himself who cries out in his sleep. As Macbeth describes it after committing the murder, he hears one of the guards say 'God bless us!' and the other reply 'Amen'.
However, it is the king who cries out, prompting Macbeth to think he also hears a voice saying 'Sleep no more! Macbeth does murder sleep'. This contributes to the themes of guilt and chaos throughout the play and adds to the ominous atmosphere surrounding the murder.