Final answer:
The decline of feudalism in western Europe post-Black Death was primarily hastened by labor shortages. This change allowed surviving peasants to negotiate for better working conditions, leading to social mobility and the rise of central monarchical powers, which replaced feudal lordships. So, the correct option is d) Labor shortages
Step-by-step explanation:
Following the Black Death, the decline of feudalism in western Europe was hastened by labor shortages. This situation arose as a direct consequence of the sheer number of deaths due to the plague.
Surviving peasants became less tolerant of the demands of their feudal lords. The scarcity of workers meant that those who were left could demand higher wages and better conditions, since landlords were desperate to keep their estates productive.
Many peasants left rural areas, attracted by more generous terms of labor or seeking employment in towns and cities.
These shifts in labor dynamics played a critical role in eroding the rigid social hierarchies typical of the feudal system. The increased demand for labor led to heightened opportunities for social mobility among peasants and played a part in the emergence of central monarchical bureaucracies, which began to replace the power of local nobles.
The legacy of the Black Death, therefore, included profound transformations in Europe's economic, social, and political structures, ultimately contributing to the end of the feudal era.
So, the correct option is d) Labor shortages