What is market failure and give two examples related to allocation of resources?

• A. Market failure means the market achieves perfect efficiency; examples: perfect competition and full employment.
• B. Market failure occurs when the government steps in; examples: regulation and taxation.
• C. Market failure occurs when the market fails to allocate resources efficiently; examples: externalities and public goods.
• D. Market failure is unrelated to resource allocation; examples: currency fluctuations.

Answer: (C)

Market failure happens when the price system fails to allocate resources efficiently, so social costs and benefits differ from private ones and the market ends up producing too much of some things and too little of others. Two classic examples tied to allocation of resources are externalities and public goods.

Externalities occur when someone’s actions affect others who aren’t involved in the market transaction, and these effects aren’t reflected in prices. A negative externality like pollution raises social costs that producers don’t pay, which can lead to too much of the polluting activity being produced from society’s point of view. A positive externality, such as vaccination or research that benefits others, adds social benefits not captured by private incentives, leading to too little of that activity being undertaken. In either case, resources aren’t directed to where society would most value them.

Public goods are goods that are non-excludable and non-rivalrous, meaning one person’s use doesn’t reduce another’s and it’s hard to charge people for use. The market tends to under-provide these because individuals can free-ride, hoping others will pay. Since private markets don’t reliably supply enough of public goods, resources are allocated less efficiently than is desirable for society.

The other statements mix up what market failure means or what it implies. Market failure isn’t the same as perfect efficiency, so that description is incorrect. Market failure isn’t defined by government intervention itself—regulation and taxation are tools to address failure, not the definition of failure. And market failure is indeed related to how resources are allocated, so saying it’s unrelated to resource allocation is not accurate.