If aggregate demand increases and, as a result, real output and employment increase but the price level remains unchanged, we can assume that:$$

Question $55$ options:

a$)$

the money supply has declined.$$

b$)$

aggregate demand intersects aggregate supply in the horizontal range of the aggregate supply curve.$$

c$)$

aggregate demand intersects aggregate supply in the vertical range of the aggregate supply curve.$$

d$)$

aggregate demand intersects aggregate supply in the intermediate range of the aggregate supply curve.$$