Public goods, externalities, market power, inequity are four specific sources of market failure.
Hence, option D is correct.
What do you mean by market and its failure?
Market can be defined as the place where exchange of goods and services takes place as a result of buyers and sellers being in contact with one another.
Market failure on the other hand is the situation which is defined by an inefficient distribution of goods and services in the free market.
For example : a monopolist seller sets high rates to the products leaving no choice for the consumers.
The other factors includes Public goods, externalities, market power, inequity are four specific sources of market failure.
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