14) World commodity prices over the past 150 years have:
A.steadily decreased in both the short run and long run.
B.decreased in the long run despite occasional short-run increases.
C.remained constant in the long run despite occasional short-run fluctuations.
D.steadily increased in both the short run and long run.
15) One key is difference between government activities and private transactions is that:
A.Government can enforce involuntary transactions, whereas private transactions are
mostly voluntary
B.Government can only produce services, whereas private producers can produce both
goods and services
C.Government does not run any production operations, whereas private firms have the
main purpose of running production operations
D.Government does not earn revenues from its activities, whereas private firms aim to
earn revenues and profits
16) Assume in a competitive market that price is initially above the equilibrium level.
We can predict that price will:
A.decrease, quantity demanded will decrease, and quantity supplied will increase.
B.decrease and quantity demanded and quantity supplied will both decrease.
C.decrease, quantity demanded will increase, and quantity supplied will decrease.
D.increase, quantity demanded will decrease, and quantity supplied will increase.
17) Defensive medicine:
A.solves the moral hazard problem.
B.increases the demand and costs for health care.
C.solves the principal-agent problem.
D.is the same as preventive medicine.