D Question 4 2.5 pts New Keynesian economists recommend active government policies since they believe that economy can self adjust fast because of sticky wages and sticky prices. economy can self adjust fast because of flexible wages and flexible prices. O economy can not self adjust fast because of flexible wages and flexible prices. economy can not self adjust fast because of sticky wages and sticky prices. D Question 5 2.5 pts An increase in oil prices will shift the short-run aggregate supply curve to the left. shift the short-run aggregate supply curve to the right shift the long-run aggregate supply curve to the right, shift the long-run aggregate supply curve to the left