Public Goods and the Free-Rider Problem

Steps:

• Identify public goods as non-excludable and non-rivalrous, meaning no one can be prevented from using them and one person's use doesn't reduce availability for others.
• Recognize that private markets fail to provide public goods efficiently because individuals can benefit without contributing, leading to underproduction.
• Conclude that government financing is necessary to overcome this market failure through taxes or public funding.
• Eliminate options that misdefine public good characteristics or market dynamics.

Why B is correct:

• Public goods are non-excludable by definition, allowing free-riders to consume without payment, so private firms cannot capture revenue and thus won't produce them adequately.

Why the others are wrong:

• A: Describes rivalrous goods (like private goods), but public goods are non-rivalrous.
• C: Private firms avoid producing public goods entirely due to free-riders, not by overcharging.
• D: Production costs are not inherently higher privately; the issue is revenue capture, not cost.

Final answer: B