A good or service which is both rival and excludable is a

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Quizplus · Accepted Answer

A good or service that is both rivalrous (meaning consumption by one person reduces the amount available for others) and excludable (meaning a person can be prevented from accessing it) is a private good. Public goods, on the other hand, are non-excludable (meaning it is difficult or impossible to prevent someone from accessing it) while common goods are rivalrous but non-excludable (such as fish in the ocean). Collective goods refer to goods that are provided by a group of individuals working together, but the rivalrousness or excludability of the good is not specified.

A Good or Service Which Is Both Rival and Excludable