The Church's response to feudalism, particularly its concerns about the violence and disorder that characterized feudal society, included the initiative known as the Truce of God. The Truce of God was a movement aimed at limiting the violence between feudal lords and knights, especially during certain days of the week and religious seasons. This initiative was an attempt by the Church to impose moral order and reduce conflicts that they viewed as a general failure of the feudal system.
Therefore, the correct response is:
the Truce of God.