How did Martin Luther respond to the selling of indulgences?

Luther became increasingly angry about the clergy selling 'indulgences' - promised remission from punishments for sin, either for someone still living or for one who had died and was believed to be in purgatory. ... Thanks to the printing press, Luther's '95 Theses' and his other writings spread quickly through Europe.

Explanation:

monasticism. people often do monasticism in monasteries