Answer :
Agricultural workers who were legally bound to the manor and were obligated to perform set services for the lord were b) serfs.
A serf is a person who is pressured to paint on a plot of land, specifically for the duration of the medieval length whilst Europe practiced feudalism, whilst a few lords owned all the land and all and sundry else had to toil on it.
Peasants had been the poorest people in the medieval era and lived in most cases inside the united states of America or in small villages. Serfs have been the poorest of the peasant magnificence and were a sort of slaves. Lords owned the serfs who lived on their lands.
Learn more about serfs here https://brainly.com/question/1286548
#SPJ4