If an increase in the level of money supply leads to a proportionate increase in prices with no effect on real variables ,we say that

Patents are a form of monopoly that society allows because they _____.

(A) Set up a situation in which only a few manufacturers can control an industry. (B) Give companies the right to decide who will be allowed to use their products. (C) Encourage firms to research and develop new products that benefit society as a whole. (D) Maintain an orderly way for companies to make a lot of money.

The natural rate of unemployment is the unemployment rate that would exist in the absence of _____

a. structural unemployment b. educated unemployment c. cyclical unemployment d. frictional unemployment e. underemployment