Answer:
C. Hamlet reveals that he has killed Polonius.
Step-by-step explanation:
In this scene, Hamlet engages in a conversation with Claudius where he indirectly reveals that he has killed Polonius, who is Claudius' chief counselor. Hamlet's response to Claudius' inquiry about Polonius' whereabouts implies that he knows what has happened to him. This revelation sets off a chain of events that further escalates the conflicts and tensions within the play.