Final answer:
The Counter-Reformation was a 16th-century movement aimed at making changes within the Catholic Church in response to the Protestant Reformation.
Step-by-step explanation:
The 16th-century movement that aimed to make changes within the Roman Catholic Church in response to the Protestant Reformation is known as the Counter-Reformation. Also referred to as the Catholic Reformation or Catholic Revival, it was a comprehensive effort that included ecclesiastical reconfigurations, new religious orders like the Jesuits, spiritual movements, and political reform. The Council of Trent, held from 1545-1563, played a significant role in the Counter-Reformation, affirming the importance of both faith and good works and addressing various problems within the church.