All of the given options contribute to why monks and nuns promised to live their entire lives within their religious communities, but the most accurate answer is that they made a vow to devote their entire lives to God. By committing to a life of religious service, monks and nuns dedicate themselves to a life of prayer, contemplation, and service to others within the context of their religious community. This vow includes relinquishing ownership of personal property and committing to a life of poverty, chastity, and obedience. Living within the religious community provides the necessary support and structure for them to fulfill their commitment to God and their chosen religious order.
