Final answer:
The assumption that is NOT one of the assumptions of the Keynesian Model is "No government." The Keynesian Model acknowledges the role of government in the economy and suggests that the government can influence aggregate demand through government spending and tax cuts.
Step-by-step explanation:
The assumption that is NOT one of the assumptions of the Keynesian Model is "No government."
The Keynesian Model acknowledges the role of government in the economy and suggests that the government can influence aggregate demand through government spending and tax cuts. Therefore, the assumption of "No government" contradicts the Keynesian perspective.