Answer:health care = public good
clean air= public good
stock investment = individual good
Explanation: Both the health and clean air is the basic fundamental of our life . these are the constitutional rights provided to us . so, these are te public good which impacts the society as a whole.
At the other hand, stock investment is an individual good because it consist of the profit motive of a particular person . as the stock market gets up high or low , the profits of individuals also vary. this impact the general position of an individual rather than the whole community.