Use the following to answer questions . Exhibit: Using the Aggregate Demand/Aggregate Supply Model 2 -(Exhibit: Using the Aggregate Demand/Aggregate Supply Model 2) A shift from SRAS₁ to SRAS₂ could have been caused by all of the following except A) an increase in the consumer confidence index. B) an increase in payroll tax. C) a rise in health care costs which raises the cost of employing labor. D) terrorist attacks that destroys an economy's infrastructure.

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An increase in consumer confidence typically affects aggregate demand, not short-run aggregate supply (SRAS). The other options would increase costs or reduce productive capacity, shifting SRAS left.

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