Final answer:
The relationship that best represents feudalism is b) Landlord to tenants, as lords would provide land to their vassals in exchange for loyalty and military service, often using peasants to work the land.
Step-by-step explanation:
Feudalism was a social and economic system that existed in medieval Europe, where power was based on land ownership and protection. The relationship that best represents feudalism is b) Landlord to tenants. Nobles, or lords, owned the land and granted portions of it, known as fiefs, to their vassals in exchange for military service and other forms of loyalty. These vassals, in turn, had the right to exploit the land by extracting wealth from the peasants who worked it, providing them with protection and a place to live without directly paying taxes to the lords.
The Church also played a significant role as a powerful landowner, with bishoprics and monasteries acting as lords, exempt from taxes and possessing their own lands. Over time, the feudal system's rigid class structure, formed by a network of rights, privileges, and pledges of loyalty, led to its ultimate decline and replacement by capitalism and the advancements of the industrial era.