The correct response regarding the impact of the Western Roman Empire's fall on feudal societies in Europe is:
The fall of the Western Roman Empire led to an increasing dependence on feudal societies as regional powers vied for control of land.
This choice reflects the historical context in which the decline of centralized Roman authority resulted in fragmented power structures. Without a strong central government, local lords gained more control over land and resources, leading to the development of the feudal system. Feudalism became a response to the need for protection and stability in a time of conflict and uncertainty following the collapse of the Roman Empire.