If countries engage in international trade:
A) they give up the ability to specialize in production.
B) worldwide levels of production are lower.
C) they will be consuming inside their production possibility frontiers.
D) they will be consuming outside their production possibility frontiers.
Which of the following will NOT shift the labor supply curve?
A) a change in attitude toward work
B) changes in a spouse’s income
C) changes in expectations about future wealth
D) a change in the wage rate
Figure: Prices, Cost Curves, and Profits