The correct answer is A. The right to farm the lord's land
Step-by-step explanation:
During the Feudalism which was an economic and military system during the middle ages (9th to the 15th century), the society was divided in different hierarchies that guaranteed a social structure based on land and exchange of labour and included the king, the nobles, the vassals, the kings, the peasants, among others. In the case of the vassals it refers to a role or social status in which a person had an obligation with a lord or monarch mainly to protect him or provide military support and in exchange for this and his loyalty, the vassal received the benefit of holding land of the lord and the right to farm it. In this way, the vassal could use the land for his benefit through the peasants or serfs that were in charge of farming the land. Thus, it can be concluded in exchange for this loyalty the Vassal received the right to farm the lord's land as in the exchange of protection and loyalty the knight, monarch or lord provided him with the right of holding part of their lands.