单选题 Supply-side economics focuses on the impact of:
  • A. government borrowing on interest rates and private consumption and investment.
  • B. higher government spending and lower taxes on aggregate demand.
  • C. axes on the incentive to engage in productive activities.
【正确答案】 C
【答案解析】The effect of taxes on the incentive to engage in productive activities and thus on aggregate supply is the focus of supply-side economics.