Sometimes market activities (production, buying, and selling) have unintended positive or negative effects outside the market's scope. These are called externalities. Assume that you are a policy maker concerned with correcting the effects of gases and particulates emitted by a local power plant. Write a 1-page memo that addresses the following points:

Select 1 of the following policies from the following list that you think would best reduce emissions: Pigouvian taxes, emission taxes, or cap and trade. Explain it.

Why do you think your policy would work in reducing the total amount of emissions?

In your answer, explain the costs and the benefits of the policy that you choose.

How would you decide what the best level of emission reduction was?