_____ country hosts the world’s largest SO2 emission hotspot ?

a) China
b) South Africa
c) India
d) Russia

The NASA data revealed that Norilsk smelter complex in Russia is the largest SO2 emission hotspot in the world, followed by Kriel in Mpumalanga province in South Africa and Zagroz in Iran. However, in the country-wise ranking, India tops the list in emitting SO2 as it has the maximum number of hotspots.