For various reasons, fiscal policy changes automatically when output and employment fluctuate. a. Explain why tax revenue

Question:

For various reasons, fiscal policy changes automatically when output and employment fluctuate.
a. Explain why tax revenue changes when the economy goes into a recession.
b. Explain why government spending changes when the economy goes into a recession.
c. If the government were to operate under a strict balanced-budget rule, what would it have to do in a recession? Would that make the recession more or less severe?