Monetarist theory, particularly as espoused by Milton Friedman, emphasizes that the natural rate of unemployment and the level of output in the economy are determined by real factors such as capital stock, the size of the labor force, and the level of technology. According to monetarists, these factors influence the economy's productive capacity in the long run. Monetarists argue that aggregate demand does not affect the long-run natural rate of unemployment or output. Instead, it affects the economy in the short run by influencing inflation and economic cycles, but in the long run, the economy gravitates towards its natural rate determined by real factors.
- (A) Capital Stock: Capital stock is a key determinant in the natural rate of output and unemployment, as it defines the productive capacity of the economy.
- (B) Size of labour force: The size of the labor force also determines the natural level of output and unemployment, as a larger labor force typically leads to higher output.
- (C) Level of technology: The level of technology is critical for determining the efficiency of production and therefore impacts the natural rate of output and unemployment.
- (D) Aggregate demand: According to monetarists, aggregate demand affects short-term fluctuations in output and employment, but not the long-run natural rate. Therefore, it does not determine the natural rate of unemployment or output.
The correct answer is (D), as aggregate demand does not determine the natural rate of unemployment or output according to monetarist theory.
Final Answer: (D) Aggregate demand.