What economic system primarily encompasses the management of manors?

The correct answer is indeed the system of manorialism. This economic system was characterized by the organization of rural economies during the Middle Ages in Europe. Manorialism involved the management and administration of manors, which were large estates owned by a lord. These estates included agricultural land, villages, and the peasants who worked the land. The lords provided land and protection, while the peasants supplied labor and a portion of their agricultural produce.

Under manorialism, the economy was largely self-sufficient, with peasants producing the necessary goods for their own families and the lord's household. This system was foundational to the feudal order, but it specifically addressed the economic relationships and obligations within the manorial estate, emphasizing local agrarian production and labor dynamics.

Other systems listed, such as feudalism, encompass broader social and political structures, while capitalism and mercantilism represent more modern economic frameworks focused on trade, market economies, and state regulation of commerce.