Lauren doesn't use medicinal marijuana, nor does she sell it. However, she lives with a roommate who smokes a great deal. The smell bothers Lauren, and it causes some irritation to her eyes and lungs.

This is an example of the problem we called [ Select ] ["a central planning mechanism", "a monopoly", "an externality", "asymmetric information"]in lecture; problems like these are why the government [ Select ] ["provides incentives to lower the marginal cost of purchasing medical marijuana", "does something when its marginal cost is greater than its marginal benefit", "runs the most free type of market", "can sometimes provide a better outcome than the market

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