Refer to the information provided in Figure 7.4 below to answer the question(s) that follow. 
Figure 7.4Refer to Figure 7.4. The marginal product of the sixth worker is
A. -50.
B. -5.
C. 5.
D. 8.33.
Answer: B
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An opportunity cost is
A) an opportunity lost. B) only the explicit costs of an action. C) only the costs a person can consciously articulate at the moment of deciding. D) none of the above.
All of the following shift the LAS curve EXCEPT
A) a change in the capital stock. B) an increase in the money wage rate. C) an increase in the stock of human capital. D) technological progress.
The liquidity-money (LM) curve shows the alternative combinations of interest rates and real income that clears the money market
Indicate whether the statement is true or false
Rational expectations theory suggests that short-run stabilization policy
A. is not effective in stabilizing the economy. B. is best achieved with monetary policy. C. is best achieved with fiscal policy. D. is equally easy to achieve with monetary or fiscal policy.