Final answer:
Laertes' poisoned sword is the trap that ultimately succeeds in killing Hamlet. Claudius and Laertes conspired to kill Hamlet using this means, and despite other methods attempted, it is the poisoned blade that causes Hamlet's death.
Step-by-step explanation:
In Shakespeare's play Hamlet, the trap that ultimately leads to Hamlet's death is the poisoned sword used by Laertes during their duel. Claudius conspires with Laertes to kill Hamlet by poisoning the tip of Laertes' sword, so that even a scratch would be fatal.
Despite various schemes, including the poisoned goblet intended for Hamlet, it is the poisoned sword that brings about Hamlet's demise.
During the duel, Hamlet is indeed wounded by the poisoned sword, which seals his fate. His death is not immediate, allowing him to learn of the treachery, but ultimately, the poison takes its toll.