Answer:
D.)The Council of Trent
Step-by-step explanation:
The council of Trent was held between 1545 and 1563 with the aim of addressing the instability created by the protestant reform started in 1517 by Martin Luther where his 90 thesis.
The aim of the encounter was to define a counter-reformation which could help the church regain after the significant loss caused by the protestant.
The council was held in three parts where different decision were been made. The first council reformed the doctrine in terms of Canon of the old and the New testament, number of sacraments, and also original sins; the second period saw the rise of the doctrine of transubstantiation and in the third period some reforms were made and seminar were established .