Answer:
The right answers are:
4. He believed that the Bible was the ultimate authority on Christianity, not the pope.
5. His theological stand against the Catholic Church began the Protestant Reformation.
Explanation:
For Luther, the doctrine of redemption and grace had been corrupted in the practices of the Roman Catholic Church. He stated that salvation and receiving God´s grace could be attained by the faith and that the Bible was the ultimate authority, not the pope or men´s interpretations.