Answer:
a) The council rejected the Protestant doctrine of justification by faith alone, arguing that faith and works are both necessary for salvation.
Step-by-step explanation:
When Luther began his reformation in the Catholic faith, he advocated the concept of faith alone (Sola Fide, in Latin). This idea recovers old Christian beliefs about salvation and self-development based ONLY in faith. So, all the physical and material conceptions such as work, deeds, and wealthy are not good, and humans can find salvation only praying.