Among the following examples, the one that best illustrates a public good is

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A bike path is an example of a public good because it is non-excludable (it is difficult to prevent someone from using it) and non-rivalrous (one person's use of the bike path does not diminish another person's use). The other options do not fit both criteria for a public good. Laptops are excludable (access can be restricted) and can be rivalrous if there are limited resources available (such as charging stations or Wi-Fi bandwidth). Movies are also excludable (theaters can eject someone from a showing) and rivalrous (one person's viewing of the movie takes away from another's). Airline tickets are excludable and rivalrous, as there are limited seats on a flight.

Among the Following Examples, the One That Best Illustrates a Public