Answer:
B. Russia
Step-by-step explanation:
Russia will be mostly affected if the international environmental policies encourages the reduction of reliance on fossil fuels such as coal, crude oil, gas, coal .Russia has one of the highest crude oil reserves and also one of the highest producer of oil.
Russia economy is highly dependent on the export of crude oil and it major market is Europe. Russia also have a large market for coal too because it has large deposit of this natural resource.
Therefore, any attempt to reduce reliance on fossil fuel will affect Russia economy more and cause unemployment.