D Question 8 1 pts (Figure: Market for Pants) Suppose that the world price of a pair of pants is $40. According to the figure, international trade will lead to in the domestic producer surplus and in the domestic consumer surplus. Price 100 Domestic supply 50 Domestic demand 50 100 Quantity of pants (in thousands) O a decrease; a decrease O a decrease; an increase an increase; an increase O an increase; a decreaseQuestion 4 10 pts (Figure: Market for Washing Machines) According to the figure, the equilibrium world quantity of washing machines (in thousands) sold is: Price 1,000 World supply 500 World demand 50 100 Quantity of washing-machines (in thousands) 0 50. O 100. O 750. 600.Question 3 10 pts Which of the following is a term economists use to explain why specific industries can become more efficient over time? O opportunity cost O learning by doing O the marginal principle O cost-benefit principle