1. Which of the following is the best example of a government sanctioned monopoly? a. a public utility company. b. a k-12 public education school district. c. a newly patented drug. d. Microsoft's Windows products. e. All are very good examples of such a monopoly. 2. Which of the following is the most economically justifiable barrier to entry? a. a market with an MES of 100 percent b. a market involving various pricing policies that may be legal or illegal. c. a market with heavy use of trademarks. d. none of the above.