Answer:
Keynesians believe that, because prices are somewhat rigid, fluctuations in any component of spending—consumption, investment, or government expenditures—cause output to change. If government spending increases, for example, and all other spending components remain constant, then the output will increase.
Step-by-step explanation:
Keynesianism is at heart a philosophy which favours a mixed economy with a role for both the public and private sectors. Now although Keynes is most associated with a liberal ideology, especially because it was practised during the depression by FDR, some would argue that it might have come out of the depression, it turns out that most mainstream liberals and conservatives do practice some form of Keynesian economics.