Which statement best reflects a typical advantage of market-based policies for reducing emissions, compared to command-and-control approaches?

• A. They set a single target per pollutant that all firms must meet.
• B. They rely on uniform technology mandates for all firms.
• C. They price emissions and allow trading to achieve the target at the lowest cost.
• D. They have no administrative costs.

Answer: (C)

Pricing emissions and allowing trading uses price signals to allocate reductions to where they cost the least. When emissions are priced, firms face a cost for each unit emitted and for each unit they reduce. Those with low abatement costs will cut more and sell permits, while those with high abatement costs will buy permits rather than invest in expensive reductions. This arrangement drives the total cost of achieving the target down because reductions occur where they are cheapest, and it also provides an incentive for innovation to lower future costs.

In contrast, command-and-control approaches fix a single standard or require specific technologies for all firms, which ignores differences in abatement costs and can push some firms to undertake costly reductions that aren’t needed elsewhere. And the idea that there are no administrative costs isn’t accurate—any policy requires some monitoring and enforcement, though market-based approaches tend to be more cost-effective overall.