Correct option is B
Explanation:
Lady Macbeth is metaphorically the "fourth witch" because she manipulates Macbeth into committing regicide, driving the plot through ambition and moral transgression.
Information Booster:
Lady Macbeth’s psychological influence in Shakespeare’s tragedy mirrors the supernatural forces of the witches, blurring the line between fate and human agency.
Additional Knowledge:
(1) She doesn’t practice literal witchcraft.
(3) She is not related to the witches.
(4) She never joins them in dance.