the end of dynastic rule in china was ultimately due to\n○ greed.\n○ opium.\n○ imperialism.\n○ isolationism.

Answer:

C. imperialism

Brief Explanations:

Imperialist powers' incursions, unequal - treaties, and economic exploitation weakened the Qing dynasty and led to the end of dynastic rule. Greed was an internal factor but not the ultimate cause. Opium was part of imperialist aggression. Isolationism was a pre - imperialist policy that changed due to external pressure.