C. expectations are important in determining the outcome of a discretionary policy.
Explanation:
Lucas Critique -
Robert Lucas was a famous economist and was awarded the 1995 Nobel Prize in the field of economics .
according to the Lucas critique ,
The consciousness of trying to predict the effects of the change in the economic policy completely on the basis of observations in the historical data .
It helps to understand that the expectations are necessary to determine the outcome of any discretionary policy .
Explanation: Ties combine the durations of the pitches they connect. Notes of different durations can be tied together. Notes with different pitches can be tied together. Notes can be tied across the barline.