Keynesian economics: a. emphasizes the possibility that an economy can never be in equilibrium at less than full employment. b. affirms the classical economists' basic premise concerning competitive markets. c. believes that unemployment results when aggregate demand is insufficient to reach a full-employment level of real GDP. d. believes that monopolies and unions tend to be permanent fixtures in our economy and the prices they create tend to be flexible, at least downwardly.

Consider the labor market for heath care workers. because of the aging population in the united states, the output price for health care services has increased. holding all else equal, what effect does this have on the labor market for health care employees? a. the equilibrium wage increases and the equilibrium quantity of labor increases.b. the equilibrium wage increases and the equilibrium quantity of labor decreases.c. the equilibrium wage decreases and the equilibrium quantity of labor increases.d. the equilibrium wage decreases and the equilibrium quantity of labor decreases.