Which of martin Luther disagreement with the Catholic Church do u think we're most influence by the renaissance idea of humanism? why?

The disagreement that was most influenced by the renaissance idea of humanism was The indulgences.

The church used the indulgences as a way to get more money to the church, rich people would give land and big amounts of money to parishioners. Luther was strongly against it and for him, the indulgences were the last straw.