Hello.
The correct answer to your question is b. Russia.
Russia possesses the second largest coal reserves. It is estimated that Russia holds the 1 8% of the world's total. The country's major reserves include the Donetskii in Moscow, the Pechora in Western Russia, and Kansk-Achinsk, Irkutsk, the Kuznetski, and South Yakutsk in Eastern Russia.
I hope this helps.