Final answer:
In Act 3 of The Crucible, John Proctor is arrested based on the pivotal piece of evidence of a poppet with a needle in it.
Step-by-step explanation:
In Act 3 of The Crucible, John Proctor is arrested based on the pivotal piece of evidence of a poppet, or doll, with a needle in it. The poppet was found in his house and was presented as evidence of his involvement in witchcraft. The accusers claimed that the poppet was a form of voodoo used to harm someone.
Learn more about John Proctor's arrest in The Crucible