1.b. market demand curve is below the marginal social benefit curve
2.b. too few flu vaccines being produced since external benefits would not be considered.
3.a. less education would be acquired since society has not considered the positive external benefits of education.
4.c. system of rose production permits.
5.a. number of phone calls made while driving will be above the socially optimal quantity.
6.a. environmental standard.
7.a. Coase theorem.
高深啊，
不知道哎
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