4. Upon graduating from college, May immediately finds a job. Suppose that she did not intend to work while she was in college. Her new employment will (a) increase the adult population. (b) decrease the total population. (c) decrease the number of unemployed. (d) increase the labor force. 5. Unemployment insurance increases the amount of frictional unemployment by (a) making workers more eager in their search for new jobs. (b) inducing workers to accept the first job offer they receive. (c) making employers more reluctant to lay off workers. (d) easing the economic hardship of unemployment. 6. The unemployment resulting from the minimum-wage law is an example of (a) structural unemployment. (b) frictional unemployment. (c) underemployment. (d) shortage of labor. 7. The efficiency-wage theory states that (a) a wage level that is above the market equilibrium results in inefficiency. (b) a wage level that is above the market equilibrium can promote productivity of workers. (c) a wage level should be above the market equilibrium because of the minimum-wage law. (d) a wage level should be above the market equilibrium because of a shortage of labor