Metroligest!cause other people are weather man
I think it is c but d also may be it so i hoped i helped a little!
Answer:
A public good has two key characteristics: it is nonexcludable and nonrivalrous. ... Nonrivalrous means that when one person uses the good, it does not prevent others from using it. Markets often have a difficult time producing public goods because free riders will attempt to use the public good without paying for it.
Explanation:
