Which term describes the religious reform movement that began in 16th-century Europe?

• A. Enlightenment
• B. Schism
• C. Ecclesiastical reform
• D. Reformation

Answer: (D)

The main idea here is a major religious reform movement that began in 16th-century Europe. It emerged as critics of the Catholic Church challenged practices like indulgences, questioned papal authority, and argued that salvation comes through faith and Scripture. Martin Luther and others helped popularize these ideas, with the 95 Theses in 1517 often noted as a starting point. The movement spread across Europe, aided by the printing press, leading to new Protestant denominations and a lasting division in Western Christianity.

That broader reform, rather than a general internal cleanup, is why this term fits best. The Enlightenment belongs to a later era with a focus on reason and science; a schism is the result of a split, not the organized reform movement itself; and ecclesiastical reform describes reforms within the church without capturing the sweeping, church-building changes and creation of new denominations that followed.