Which was the Catholic church’s most powerful tool in maintaining its authority in medieval Europe?

Its missionary work
It’s monasteries and convents
It’s control over the sacraments
It’s hospitals and schools

The Catholic church's most powerful tool in maintaining its authority in medieval Europe was its control over the sacraments. The church claimed the exclusive ability to administer the sacraments, such as baptism, confession, and communion, which were believed to be essential for salvation. This control over spiritual rites and rituals gave the church immense power and influence over the lives of medieval Europeans.