Question

it was more difficult for serfs to improve their economic and social status because:
a the aristocracy violently oppressed all serfs.
b serfs were illiterate, and literacy was required for social and economic mobility.
c serfs were forced to work every daylight hour of every day to produce food for their lord.
d serfs were tied to their lords manorial lands and so could not move.
e serfs were regularly fined large amounts by their lords for very small infractions.

Explanation:

Serfs were bound to the land (manorial lands) of their lords under the feudal system. This tied - down nature restricted their ability to seek better economic opportunities in other places (like towns where there might be more diverse economic activities) or to improve their social status by moving to areas with different social hierarchies.

• Option A: While there was oppression, the key restrictive factor was land - tying rather than just general violent oppression.
• Option B: Illiteracy was not the main structural barrier compared to land - bondage.
• Option C: The work obligation was part of their feudal duties, but the inability to move (due to land - tie) was more fundamental for status improvement.
• Option E: Fines were a form of exploitation, but again, the land - tie was a more overarching constraint.

Answer:

D. serfs were tied to their lord's manorial lands and so could not move.