Option C i.e, Both addressed concerns with the practices of the Catholic Church is the correct answer.
We see Protestant Reformation arose against the evil practices of the Catholic Church and Clergy. Likewise Catholic Reformation or Counter Reformation arose as a reaction against the Protestantism and wanted to reform Catholic Church within.It also tried to reform the abusive practices of Catholic Church and corruption of Clergy.
Explanation:
In 313 CE, the emperor Constantine issued the Edict of Milan, which granted Christianity—as well as most other religions—legal status. ... In 380 CE, the emperor Theodosius issued the Edict of Thessalonica, which made Christianity, specifically Nicene Christianity, the official religion of the Roman Empire.