-Refer to Exhibit 8-3

question 54

Multiple Choice

-Refer to Exhibit 8-3.A shift in aggregate demand from AD₂ to AD₁ could have been the result of

• A) a decrease in the price level.
• B) an increase in the price level.
• C) businesses become more optimistic about future sales.
• D) businesses become more pessimistic about future sales.

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Definitions:

End-systolic Volume

This is the volume of blood left in the ventricle at the end of systole, just before the heart fills again during diastole.

Stroke Volume

The amount of blood pumped by the left ventricle of the heart in one contraction, indicating cardiac efficiency.

Cardiac Output

The quantity of blood circulated by the heart through the vascular system every sixty seconds.

Blood Pressure

The pressure of circulating blood on the walls of blood vessels, often measured as systolic over diastolic and a vital sign of cardiovascular health.