Final answer:
Jan Hus believed that the Catholic Church needed reform and criticized the clergy's abuse of power.
Step-by-step explanation:
Jan Hus, a Czech religious reformer and early figure of the Protestant Reformation, believed that the Catholic Church needed reform.
Hus argued against the corruption within the church, particularly criticizing the clergy's abuse of power and wealth. He questioned the authority of the pope and advocated for the church to return to the teachings of Jesus Christ and the early apostles.
Hus's belief in the need for reform ultimately led to his excommunication and execution by the Catholic Church.
Learn more about Jan Hus's belief about the Catholic Church