How can market-based policies incentivize firms to reduce emissions?

• A. They set a price on emissions or provide tradable permits, aligning private costs with social costs.
• B. They ban all production.
• C. They do nothing.
• D. They subsidize production regardless emissions.

Answer: (A)

Putting a price on pollution, through either a tax on emissions or a system of tradable permits, creates a financial incentive for firms to cut emissions. This price makes the social costs of pollution part of each firm’s private costs, so emitting becomes more expensive and reducing emissions can lower costs or even generate revenue by selling permits. In short, market-based policies align private decisions with the social cost of pollution by making pollution costly and giving firms a clear incentive to innovate and emit less. The other options don’t create that incentive: banning production is an extreme, doing nothing ignores the external costs, and subsidizing production regardless of emissions would encourage more pollution.