Which statement best describes the tragedy of the commons and a common policy solution?

• A. Overuse of a shared resource; solutions include regulation, privatization, or charges/taxes.
• B. A market failure due to imperfect information.
• C. A macro policy to increase exports.
• D. An efficient allocation of resources.

Answer: (A)

The tragedy of the commons describes overuse of a shared resource when individuals act in their own self-interest, because no single user bears the full social cost of their use. When a resource is non-excludable but rival—like a pasture, a fishery, or a grazing ground—each person benefits from using it now while the costs of depletion are distributed among everyone in the long run. That mismatch in incentives leads to overconsumption and eventual depletion.

A common policy solution is to change incentives so people internalize the social costs. This can be done by regulating usage (quotas or access rules), privatizing the resource to create clear property rights and ensure responsible stewardship, or imposing charges or taxes that raise the price of using the resource and discourage excessive use.

The other statements don’t fit as well because they describe different ideas: not just a market failure from imperfect information, nor a macro policy to spur exports, nor an efficient allocation of resources. The essence here is the overuse of a shared resource and the practical ways to curb that through rules, rights, or prices.