3. Suppose that the labor force participation rate increases. the labor supply curve should shift _____, and the number of workers available at any given wage rate will _____.

A. right; increase

B. left; decrease

C. right; decrease

D. left; increase

4. when Lebron James rejoined the Cleveland cavaliers in 2014, fox sports Ohio was able to raise its rates for advertising on its cable TV channel. this situation is an example of

A. a public good

B. an external benefit

C. an external cost

D. asymmetric information