Final answer:
Martin Luther only accepted Christian teachings that had evidence in the Bible, a principle known as 'Sola Scriptura' which was central to the Protestant Reformation.
Step-by-step explanation:
Martin Luther would not accept a Christian teaching as valid unless he could find evidence for it in C) The Bible. Luther's approach, which emphasized that scripture alone should be the source of Christian belief and practice, was a fundamental principle of the Protestant Reformation.
Martin Luther only accepted Christian teachings that had evidence in the Bible, a principle known as 'Sola Scriptura' which was central to the Protestant Reformation. This principle is known as Sola Scriptura, Latin for 'Scripture alone', and it marked a departure from the Catholic Church's reliance on Church tradition, papal decrees, and Church councils.