Which statement best captures why governments often provide public goods?

• A. They always have centralized markets for pricing
• B. They often suffer from the free-rider problem
• C. They are never private
• D. They do not create any externalities

Answer: (B)

Public goods are non-excludable and non-rivalrous, so people can benefit without paying and one person’s use doesn’t reduce another’s. Because of that, individuals have little incentive to pay for them, which leads to the free-rider problem. Private markets tend to underprovide public goods for this reason, so governments fund and supply them—often through taxes—to ensure they are available. The best choice highlights this core issue: the free-rider problem drives government provision of public goods. The other options don’t fit: centralized pricing isn’t the key reason public goods are provided; private provision can occur in some cases but is not reliable for these goods; and the statement that no externalities exist is incorrect, since public goods are often tied to spillover benefits that justify government action.