Which character or characters in The Crucible are most capable of ending the hysteria and why?

In The Crucible, the character who is most capable of ending the hysteria is John Proctor. Proctor is a rational and morally upright individual who is not easily swayed by the fear and accusations that have gripped Salem. He is willing to stand up against the corrupt authorities and speak out against the wrongful persecution of innocent people. Proctor's integrity and willingness to speak the truth make him a powerful force for ending the hysteria in Salem.

Another character who could potentially end the hysteria is Reverend Hale. Despite initially being a staunch supporter of the witch trials, Hale eventually comes to see the errors of his ways and tries to stop the madness that has taken hold of Salem. His expertise in the supernatural and his desire to seek justice make him a valuable ally in putting an end to the hysteria.

Overall, John Proctor and Reverend Hale are the characters most capable of ending the hysteria in Salem due to their moral integrity, rationality, and willingness to stand up against injustice.