What does deadweight loss from pollution reflect in welfare analysis?

What does deadweight loss from pollution reflect in welfare analysis?

• A. Increase in government revenue.
• B. Gain in consumer surplus.
• C. Loss of net social welfare due to quantity substitution away from the social optimum.
• D. No impact on welfare.

Answer: (C)

Deadweight loss from pollution happens when the quantity chosen in the market deviates from the socially efficient level because pollution imposes costs on others that the market does not internalize. In welfare terms, the value of each additional unit to society (marginal social benefit) does not equal its true cost to society (marginal social cost, which includes the damages from pollution). The market outcome typically produces too much (or too little) of the good relative to the social optimum, creating a gap between MB and MSC. The area of lost surplus created by this deviation — the net decrease in social welfare — is the deadweight loss. This concept is about a reduction in welfare, not a gain in government revenue or consumer surplus, and it does reflect an impact on welfare because production is misallocated due to external costs.

Deadweight loss from pollution happens when the quantity chosen in the market deviates from the socially efficient level because pollution imposes costs on others that the market does not internalize. In welfare terms, the value of each additional unit to society (marginal social benefit) does not equal its true cost to society (marginal social cost, which includes the damages from pollution). The market outcome typically produces too much (or too little) of the good relative to the social optimum, creating a gap between MB and MSC. The area of lost surplus created by this deviation — the net decrease in social welfare — is the deadweight loss. This concept is about a reduction in welfare, not a gain in government revenue or consumer surplus, and it does reflect an impact on welfare because production is misallocated due to external costs.