________ is the market value of final goods and services produced in a country in a given period of time?

In recent decades, international trade has been

a. a constant percentage of U.S. GDP b. a declining fraction of U.S. GDP c. an increasing fraction of U.S. GDP d. declining as measured by total dollars spent e. constant as measured by total dollars spent

The higher wage rate received by garbage collectors to compensate for the lower desirability of their job

a. would not exist in a competitive labor market b. is a compensating wage differential c. is caused by union negotiators d. disappears in the long run e. only applies when the garbage collecting market is an oligopoly