The market tends to underproduce public goods because

Public goods are financed by tax so the government often face political pressures and have to decide what is more desirable to produce. It is difficult to measure the benefits of the public good and therefore difficult to compare with others. Public goods are non-excludable so the free-rider problem arises; people enjoy the use of the good without paying for it.

answer; ///i believe that the correct answer is (d) ///all of the

im almost done gimme more time to get the answer