Final answer:
Serfs or peasants worked for the nobles and palaces in feudal societies. They were tied to the land and worked as farmers, fishermen, and craftsmen.
Step-by-step explanation:
The subject of this question is Social Studies .Serfs were the laborers who worked on the estates of the nobility during the Middle Ages. Economically, serfs were bound to the estate and were not free to leave it; they provided essential services such as farming, craftsmanship, and other labor. Manorialism, or the manor system, described the social and economic structure of Medieval Europe where serfs were obligated to work the lord's land and their own plots, while owing a tithe to the lord or the church. In comparison, peasants could be either serfs or free tenants, artisans were skilled craftspeople who might or might not be serfs, and tradesmen were merchants who engaged in commercial activities. Based on the context, the correct answer that encapsulates those who worked for the nobles on their estates, including farmers, fishermen, and craftsmen, is A) Serfs.