Aproduction possibilities frontier: a. shows the act of buying and selling. b. shows the market for a good or service. c. shows the maximum attainable combinations of two goods that may be produced with available resources. d. shows how participants in the market are linked. e. shows how unlimited wants exceed the limited resources available to fulfill those wants.

Which of the following best explains the purpose of protectionist trade policies such as tariffs and subsidies? a. they make sure that governments have enough money to pay for fiscal policies. b. they give foreign competitors access to new markets around the world. c. they allow producers to sell their products more cheaply than foreign competitors. d. they enable producers to purchase productive resources from everywhere in the world.