Which church doctrine was primarily addressed during the Council of Trent?

The Council of Trent, which took place between 1545 and 1563, focused extensively on several aspects of church doctrine in response to the Protestant Reformation. Among these, transubstantiation was a central topic. This doctrine holds that during the celebration of the Eucharist, the bread and wine genuinely become the body and blood of Christ, a belief that contrasts sharply with some Protestant interpretations of communion as merely symbolic.

The Council affirmed the Catholic Church's stance on transubstantiation, reinforcing its significance in Catholic theology and practice. Through its decrees, Trent clarified the nature of this transformation and emphasized its importance for the sacrament of the Eucharist, addressing both theological foundations and pastoral applications.

In regard to the other options, while the Immaculate Conception, the Assumption of Mary, and Original Sin are also important doctrines within the Catholic Church, they were not the primary focus during the Council of Trent. The Immaculate Conception, which states that Mary was conceived without original sin, was formally defined later in 1854. Similarly, the Assumption of Mary was defined in 1950. Original Sin, while discussed in the context of salvation, was not the central doctrine deliberated at Trent. Thus, trans