Final answer:
Command-and-control regulation is one of the legal regulations relating to pollution. It sets specific limits for pollution emissions and/or specific pollution-control technologies that firms must use. However, it has limitations and drawbacks.
Step-by-step explanation:
Command-and-control regulation is one of the legal regulations relating to pollution. This regulation sets specific limits for pollution emissions and/or specific pollution-control technologies that firms must use. Although command-and-control regulations have helped protect the environment, they have three shortcomings: they do not provide incentives for going beyond the set limits, they offer limited flexibility on where and how to reduce pollution, and they often have politically-motivated loopholes.