In the lines from Macbeth, the use of the dagger serves as a powerful symbol intertwined with Macbeth’s internal conflict and psychological state. From the options provided, the two correct interpretations that explain its use are:
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Macbeth’s guilt for thinking about killing the king has triggered its appearance. - This highlights how the vision of the dagger is linked to Macbeth’s ambition and the moral weight of contemplating regicide. It represents both his desire and his turmoil regarding the act he is about to commit.
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Macbeth’s sight of the dagger, which is not actually there, indicates his insanity. - This interpretation underscores the idea that the dagger is a manifestation of Macbeth's disturbed mind. It reveals his descent into madness as he grapples with the consequences of his aspirations and actions.
Together, these interpretations reflect the psychological themes present in the play, illustrating how Macbeth's internal struggles manifest in his perception of reality.