Which of the following is the lowest class of people in the hierarchy of feudal system?

In the feudal system, the lowest class of people were the serfs. Serfs were peasants who were legally bound to work on the lord's land in exchange for protection and the right to cultivate their own land. They were not slaves, but they were also not free to leave the lord's land without permission. Serfs were considered the lowest class because they had little to no social mobility and were heavily dependent on their lord for their livelihoods. They were required to give a portion of their crops and labor to the lord, and had to work long hours in often difficult and dangerous conditions. Serfs were not allowed to own land or property, and were generally poor and lived in small, cramped homes. Despite their lowly status, serfs were a crucial part of the feudal system as they provided the labor necessary to maintain the lord's estate and ensure a steady food supply.