What is the purpose of public policy in a mixed economy with respect to market failures?

• A. To maximize private profits.
• B. To remove all government intervention.
• C. To promote only deregulation.
• D. To correct market failures, provide public goods, and stabilize the economy through policy tools.

Answer: (D)

In a mixed economy, public policy exists to address situations where markets on their own don’t allocate resources efficiently. Markets can fail when negative or positive externalities occur, information is imperfect, or there are monopolies, and they also can underprovide non-excludable, non-rival goods (public goods). Public policy uses a toolkit of taxes and subsidies, regulations, and government provision of goods and services to fix these problems, and it uses fiscal and monetary measures to stabilize the overall economy. This combination aims to improve efficiency, protect the public interest, and keep the economy steadier over time. So the purpose is to correct market failures, provide public goods, and stabilize the economy through policy tools. The other options miss these broader roles—private profits aren’t the aim of public policy, and removing intervention or focusing only on deregulation ignores the need to address failures and provide essential goods and stability.