Which of the following is the lowest in the hierarchy of a feudal system?

The lowest in the hierarchy of a feudal system is the serfs. Serfs were peasants who were tied to the land they worked on and were under the control of a lord. They were considered the property of the lord and had few, if any, rights. They were obligated to work on the lord's land, pay rent, and provide military service. In exchange, the lord provided protection and allowed them to work the land. Knights and nobles were higher in the feudal hierarchy as they held more power and had more privileges.