hen significant externalities exist: i. the market equilibrium is no longer efficient. ii. the market equilibrium is only efficient if the externality is an external benefit. iii. social surplus is not maximized. iv. the government will always increas



Answer :

When significant Externalities exist the market equilibrium is no longer efficient.

   Externalities create market failure because the pricing equilibrium of a good or service does not fairly reflect the full costs and advantages of that good or service. Equilibrium is believed to create the ideal level of output since it reflects the optimal balance between the advantages for customers and the expenses for producers. When there are considerable externalities, however, the equilibrium level is faulty because incentives are created that lead individual agents to make poor judgments for the community as a whole.

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