Which term describes a problem where individuals overuse a shared resource, depleting its value for everyone?

• A. Tragedy of the commons
• B. Private goods
• C. Public goods
• D. Probabilistic

Answer: (A)

The shared-resource problem described is the tragedy of the commons. It captures how a resource that many people can use (open access) tends to be overused because each person pursues their own immediate benefit. When one individual adds more usage, they gain more now, but the long-term cost of that extra use is distributed among everyone who shares the resource. Without rules, boundaries, or property rights to limit access, the resource becomes degraded or depleted, reducing its value for all.

Think of a pasture used by many farmers or a fishery open to all. Each person benefits from taking a little more than their fair share, but the collective impact wears down the resource. That dynamic is the essence of the term.

Other options describe different ideas about goods. Private goods are owned by individuals and are both rivalrous and excludable, not a shared-resource problem. Public goods are non-excludable and non-rivalrous, where one person’s use doesn’t reduce another’s and people can’t easily be excluded. Probabilistic has nothing to do with this resource-use issue.