Which of the following events would strengthen the argument for the use of discretionary policy, and which would strengthen the argument for rules?
a. Structural changes make the economy’s self-correcting mechanism work more quickly and reliably than before.
b. New statistical methods are found that improve the accuracy of economic forecasts.
c. A Republican president is elected when there is an overwhelmingly Democratic Congress. Congress and the president differ sharply on what should be done about the national economy.