Answer: 2. Starting the Roman Catholic Church
Explanation:
You are indeed right that the answer is option 2.
Aurelius Augustus did not so much as start the Catholic Church as he did lay the foundation of it with his teachings.
Aurelius wrote about various topics in Christianity such as the Original sin, the City of God, the Holy Trinity and his various thoughts on Christian doctrine. Adherents of most of his teachings would later evolve into the Roman Catholic Church.
Aurelius has been recognized as a saint in the major Christian denominations of Catholicism, Anglicanism and the Eastern Orthodox Church which would make him one of the most respected figures in clergy history.
