Final answer:
Macbeth speaks the line 'O, full of scorpions is my mind' to Lady Macbeth, reflecting his mental anguish and guilt in Shakespeare's play.
Step-by-step explanation:
In Act 3, Scene 2 of Macbeth, the phrase "O, full of scorpions is my mind" is said by Macbeth to Lady Macbeth. This line symbolizes the turmoil and guilt that Macbeth feels as he grapples with the consequences of his actions. Specifically, he is overtaken by anxiety and fear of retribution following the murder of King Duncan. This scene emphasizes the psychological complexities and deepening conflict within Macbeth's character.