In Act 4 of "The Crucible," Reverend Hale's character experiences a significant transformation. After talking with John Proctor, he realizes that something is fundamentally wrong with the witch trials and the accusations being made. His previous certainty about the existence of witchcraft and the righteousness of the trials is in crisis. Therefore, the correct answer is:
A. He realizes that something is wrong and is trying to support John Proctor
Hale's conflict revolves around his conscience and moral responsibility, as he grapples with the consequences of his earlier actions and seeks to rectify the injustices that have occurred.