Answer:
C) send Hamlet to England with Rosencrantz and Guildenstern
Explanation:
This conversation takes place after the "mouse trap" play Hamlet had set for Claudius.
Now aware that Hamlet knows the truth about the death of his father, Claudius decides to act quickly and send Hamlet away under false excuse, planning his servants, Rosencrantz and Guildenstern, to kill him there.
From the lines:
"Therefore prepare you;
I your commission will forthwith dispatch,
And he to England shall along with you."
we see that Claudius plans to send Hamlet to England, together with two of his servants.