d. are virtually indistinguishable from command economies.
Many economists believe that
a. once a negative income tax system was in place, the United States could increase
economic equality indefinitely without reducing economic efficiency.
b. a negative income tax would be less efficient than the current welfare system.
c. replacing the current welfare system with a negative income tax would increase both
economic efficiency and economic equality.
d. None of the above is correct.
The former communist countries of eastern Europe and the Soviet Union
a. have a better track record in environment protection than market economies.
b. have a dismal environmental record.
c. epitomize the ability of planned economies to protect the environment.
d. have no water pollution problems.