Final answer:
Polonius's plan to determine if Hamlet's madness stems from rejected love involves using Ophelia to interact with Hamlet while he and Claudius observe secretly.
Step-by-step explanation:
Polonius's Plan to Test Hamlet's Madness
The plan to test Polonius's hypothesis that Hamlet is mad from rejected love involves using Ophelia, the woman Hamlet is in love with, to interact with him while Polonius and King Claudius secretly observe. Polonius believes that by watching Hamlet's behavior and his interactions with Ophelia, they can determine if his supposed insanity is due to his romantic troubles with her. The scene unfolds in Act II of Shakespeare's play, where Polonius and Claudius set up an encounter between Hamlet and Ophelia to observe Hamlet's reactions and confirm Polonius's suspicion concerning the nature of Hamlet's madness.