Answer:
c
Explanation:
A public good is a good that is non excludable and non rivalrous. Everyone has assess to the statue and because one person is enjoying the view of the statue does not means another person cannot enjoy the view of the statue. The demand curve for public goods is summed vertically because all individuals can consume every unit of the good at the same time.
A private good is a good that is excludable and rivalrous. They are usually exchanged in the market by private sector businesses. It is only you who purchased the ferrari and those you allow that can use the ferarri.