Martin Luther was associated with which movement?

Correct answer: Reformation

Martin Luther was a sixteenth-century German theologian whose criticism of certain practices of the Roman Catholic Church helped begin the Protestant Reformation. His Ninety-Five Theses, published in 1517 according to the traditional account, encouraged debate about indulgences, church authority and religious reform. His actions contributed to the formation of Protestant churches. Therefore, option A, the Reformation, is correct.