Utilizes Relevant Data to Support Positions Model and GDP 13. If the economy is at equilibrium on AD2, policies that increase AD will a) Increase prices, but not Real GDP b) Increase prices and increase Real GDP c) Decrease prices and Real GDP d) Have no effect on the price level 14. If the economy is at equilibrium on AD4, the best policy for maintaining full employment would be a) Contractionary policies to decrease AD b) Expansionary policies to increase AD c) Increase government spending d) Do nothing to change AD Solution (13) If the economy is in equilibrium at AD2, then it is in the Keynesian range of aggregate supply. If AD is increased now, it will increase the price level & increase real GDP (upto AD4, where the classical AS range starts). Correct option (b) (14) At AD4, any change in AD will only change price, but not output. So nothing should be done to change AD. Correct option (d).