问题如下：
Which of the following statements best describes fiscal policy?
选项：
A.An increase in the budget deficit is a contractionary fiscal policy.
B.Fiscal policy involves the use of government spending and taxation to influence economy activity.
C.In boom times, governments may raise business capital spending.
解释：
B is correct.
A rise in a budget deficit is an expansionary fiscal policy.In boom times,a contractionary fiscal policy should be implemented so the government spending may be reduced and taxes may be raised.
考点： fiscal policy
增加预算赤字表明政府支出增加，这是扩张的财政政策而非紧缩的财政政策。所以A选项不入选。
税收和政府支出是财政政策的两个重要工具。前者是政府收入来源，后者是政府的支出。所以B选项入选。
在经济繁荣时期，政府考虑的是给经济降温，所以通常实施一个紧缩的财政政策，因此会减少资本投资支出。所以C选项不入选。
您好，根据答案来看，题目应该有问题，只是说best describe fiscal policy，没说是什么policies，请修正一下
