The airline and trucking industries are two examples of industries that were regulated because they were natural monopolies

Refer to Figure 17-4. Consider the shift in the short-run Phillips curves shown in the above graph. This shift may be explained by

A) an increase in the expected rate of inflation from 4.0 to 5.5 percent. B) an increase in the natural rate of unemployment from 5.0 to 6.2 percent. C) either an increase in the natural rate of unemployment from 5.0 to 6.2 percent or an increase in the expected rate of inflation from 4.0 to 5.5 percent. D) None of the above is correct.

________ are financial securities that represent promises to repay a fixed amount of funds

A) Bonds B) Stocks C) Interest rates D) Mutual funds