Answer: higher than market equilibrium quantity where cost of supplying the unit is more than the willingness to pay
Explanation:
A subsidy is a sum of money that is given to a business or an organization by the government in order to increase the supply and also keep the prices low.
Therefore, a subsidy such as a subsidy for producing corn in the United States can be considered inefficient because a subsidy results in a quantity that is higher than market equilibrium quantity whereby cost of supplying the unit will exceed the willingness to pay.
