Answer:
Martin Luther criticized the Roman Catholic Church primarily due to its practices and teachings that he believed contradicted the Bible and deviated from what he considered to be true Christianity. He objected to the sale of indulgences, which he viewed as a corrupt practice that misled people into thinking they could buy their salvation. Luther also criticized the Church's hierarchical structure and the excessive power and wealth of the clergy, advocating for a more direct relationship between individuals and God.
Step-by-step explanation: