Hamlet 4.7 Character Interviews

In this video, Claudius and Laertes conspire to kill Hamlet using a poisoned sword and wine. Meanwhile, Ophelia tragically drowns, leaving Laertes in grief and rage. The act concludes with a vengeful Laertes, a despairing Queen, and the death of Ophelia, setting the stage for further drama.

What does Claudius propose as a backup plan to ensure Hamlet's death?

How does the act end, and what emotions are present among the characters?