Final answer:
In a market with a negative externality in production, the private cost of production will be different than the social cost of production, leading to overproduction.
Step-by-step explanation:
In a market with a negative externality in production, the private cost of production will be different than the social cost of production. This means that the cost to society as a whole will be higher than the cost to the individual producer. As a result, the market will produce more of the product than is socially desirable.