Question

A. In emission trading, the government fixes the total amount of pollution that is acceptable to maintain a desired level of air quality.
B. Economists argue this approach makes air pollution control more cost – effective than the current practice of fixing air pollution standards and expecting all companies to pollute below these standards.
C. USA uses emission trading to control air pollution.
D. It then distributes emission permits to all companies in the region, which add up to the overall acceptable level of emission.

• A. BADC
• B. ACDB
• C. CADB
• D. DBAC

Hint:

Start with a specific instance, then define the concept, explain its mechanism, and conclude with expert opinion or analysis.

Answer 1

The Correct Option is C

To construct a coherent paragraph: (C) introduces the topic by citing an example — USA using emission trading.
(A) explains what emission trading is — the government sets an overall pollution cap.
(D) details the next step — permits are distributed among companies.
(B) concludes with economists' endorsement of this method for its cost-effectiveness.
Thus, the logical order is:
C — A — D — B
CADB