One way of representing attaining the positive externality by the government is through the promotion of education.
Option D is the correct answer.
When the cost or advantage is received by a third party that is not related to the economic activity, then it is considered an externality.
A positive externality is the arousal of a positive effect on either production or consumption. The act of penalizing a company for pollution, imposing taxes on citizens earning more than $250,000 and the reduction in rates of interest would all be classified as negative externalities.
Therefore, the encouragement of education by the government is regarded as a positive externality.
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