Final answer:
The purpose of missi dominici that Charlemagne sent throughout his kingdom was enforcing legal and administrative policies.
Step-by-step explanation:
The purpose of missi dominici that Charlemagne sent throughout his kingdom was B) enforcing legal and administrative policies. These missi dominici were officials who were appointed by Charlemagne to travel to different regions of his kingdom and oversee the implementation of his laws, ensure loyalty to the crown, and handle administrative matters.
They acted as Charlemagne's representatives and had the authority to collect taxes, enforce laws, and administer justice. By implementing a system of missi dominici, Charlemagne aimed to strengthen his control over his vast empire and centralize power in his own hands.