The correct answer is B) to increase the power of the Catholic Church.
Explanation:
The statement that best describes the purpose of the doctrines introduced by Pope Gregory VII is that it increased the power of the Catholic Church.
Pope Gregory VII (1025-1085) led the Gregorian Church Reformation in the Medieval times. The reforms this Poe did focused on the independence of clergy and in maintaining the moral integrity of the institution.
The results of the Gregorian Reformation were established in two documents: "Dictatus Papae" and "Libertas Ecclesiae." Pope Gregory VII tried to leave the abuses of the Roman Church in the past, and these reformations were the way to do it.
