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CA Foundation · Business Economics · Public Finance

A private firm installs a toll-free street light on a lane and finds it cannot stop non-paying residents from benefiting. Which characteristic of public goods does this inability to restrict access illustrate?

The correct answer is non-excludability. When a supplier cannot prevent non-paying people from benefiting from a good, such as a street light, the good is non-excludable. This differs from non-rivalry, which means one person's consumption does not reduce what is available to others.

  1. ANon-excludabilityCorrect
  2. BNon-rivalry
  3. CRivalry in consumption
  4. DExcludability

Explanation

Non-excludability means that once a good is provided, people who do not pay cannot be prevented from using it. The firm cannot stop non-payers from enjoying the light. Non-rivalry is a different feature: it concerns one person's use not reducing another's, not the ability to restrict access.

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