【正确答案】正确答案：Protestantism is one of the four major divisions within Christianity. The term is most closely tied to those groups that separated from the Roman Catholic Church in the 16th century Protestant Reformation. The doctrines of the various Protestant denominations vary, but nearly unanimous doctrines include justification by grace through faith and not through works, the priesthood of all believers, and the Bible as the ultimate authority in matters of faith and order.