Answer:
Option D
Step-by-step explanation:
EUETS stands for European Union emission trading system and is used as a key tool to regulate and reduce the emission of greenhouse gases. It works on the system of capping and trading where a cap is fixed for maximum emission by any regional entity as a whole and then this cap is reduces with time. Within the fixed cap, countries trade i.e buy or sell their share of emission rights to the compensate for enhanced carbon emissions.
Hence, option D is correct