In our study of fiscal policy we saw that some government spending is aimed at impacting aggregate demand to achieve increased output. There are also other reasons for government spending, such as the provision of public goods, to increase the provision of goods that provide positive externalities, and to redistribute income. WHICH category of government spending is Expenditures on public health fall into? Briefly explain why (for example you might say it is a public good, and then explain why it is a public good.)