Public goods are NOT sold in efficient quantities in the private marketplace because:
A)once supplied to a buyer,they can be made available at no cost to someone else.
B)the more one person has,the less another person has.
C)they are usually so costly that only the wealthy can afford them.
D)they are usually very poor-quality goods.

Question

Quizplus · Accepted Answer

Public goods have the characteristic of non-exclusivity, which means that once they are provided to one person, others can also benefit from them without paying for them. This leads to the underproduction of public goods in a private marketplace as suppliers cannot charge for the full value of the goods if they cannot exclude others from benefiting from them.

Public Goods Are NOT Sold in Efficient Quantities in the Private