The correct answer is option d: Censors. In ancient Greece, the office of the Censors had the authority to censor plays and ban performances that were considered immoral or politically subversive. The Censors were responsible for monitoring and controlling public entertainment, including theatrical productions. They would review the plays and determine whether they met the moral and political standards set by the authorities. If a play was deemed inappropriate or dangerous, the Censors had the power to prohibit its performance.