Prospero's most manipulative action in The Tempest is cursing Caliban to obey through physical discomfort.
The most manipulative action by Prospero in Shakespeare's The Tempest is option B: He curses Caliban with 'cramps and prokles' so he will obey. This act exemplifies Prospero's manipulative nature as he uses magic to control and subdue Caliban by inducing physical discomfort until he complies with Prospero's wishes.
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