Wages are sticky is an assumption underlying an upward-sloping short-run aggregate supply curve. Hence, option D is the correct answer.
A bigger amount of real GDP is created at every price level if the aggregate supply curve, also known as the short-run aggregate supply or SRAS, shifts to the right. Lower real GDP is created at every price level if the aggregate supply curve shifts to the left.
Because the quantity supplied rises when the price rises, the aggregate supply curve in the short run has an upward slope. Businesses only have one fixed factor of production in the short term (usually capital ). The output and real GDP increase at a given price as the curve moves outward.
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