Which of the following is an example of market failure?
A firm goes out of business because it cannot find a market for its products
Prices rise so that consumers cannot afford the products they want to buy
Producer surplus is maximized
Prices do not reflect the full social cost of production
Answer and explanation
Correct Answer: D
Market failure occurs when the free market fails to allocate resources efficiently. When prices do not reflect the full social cost of production — for example, when a factory pollutes a river without bearing the cost — the market produces more of the good than is socially optimal. This is a classic example of a negative externality causing market failure. The other options describe business outcomes or normal price movements, not market failures.
