The correct answer is: D) The teachings of Christianity were spreas to non-Jews called gentiles.
Paul believed that gentiles didn't need to convert to judaism first to be then christians. At that time they needed to comply with the Mosaic Law, be circumcised and follow the dietary jewish customs. At the council of Jesuralem, in the year 49, he spread this thougths.
Lets remeber that Paul was born in a jewish family and in the beginning he comdemned chistianity. He is famous because of his conversion to christianity, as he became a defender and spread its ideas. He thought everyone could become a a christian, barries must been eliminated between christianity and genntiles.