Need some help with these homework questions, thanks!

Question 15 4 If the economy is experiencing less than full-employment, the Keynesian school recommends that the government: O do nothing to stimulate the economy. O balance the budget to stimulate aggregate demand. O undertake fiscal policy to stimulate aggregate supply. O undertake fiscal policy to stimulate aggregate demand. Question 16 4 The aggregate demand curve is defined as the O total dollar value of household expectations. O sum of wages, rent, interest, and profits. O net national product O real GDP purchased at different possible price levels