Final answer:
Claudius's sealed order sent with Rosencrantz and Guildenstern contains instructions for the King of England to execute Hamlet.
Step-by-step explanation:
The sealed order that Claudius has sent with Rosencrantz and Guildenstern contain instructions for the King of England to execute Hamlet upon his arrival. This plot is part of the escalating tension and intrigue in William Shakespeare's play, 'Hamlet'. Claudius perceives Hamlet as a threat to his throne and his life, thus he concocts this plan to have Hamlet killed in a foreign land under the guise of an official request.