When economists and policymakers refer to the fed's dual mandate, they are referring to:

a. price stability and maximum employment.
b. price stability and moderate long-term interest rates.
c. price and exchange rate stability.
d. moderate long-term interest rates and maximum employment.

A) price stability and maximum employment.

Explanation:

When Congress enacted the Federal Reserve Act in 1913, they stated the FED's mandates:

The FED's main objective is to conduct monetary policy in order to stabilize the economy and promote economic growth.

By stabilizing the economy the FED will lower inflation rate, therefore stabilizing prices. When the FED promotes economic growth, the unemployment rate should decrease, hopefully reaching a full employment.

in terms of experimental research, mcdonald’s charging different prices in the two cities relates to

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