The correct option is D methyl isocyanate
Bhopal gas tragedy took place on 2 December 1984. 27 tons of lethal gases including methyl isocyanate (MIC) leaked from Union Carbide’s pesticide factory, forming a deadly cloud of gases over the city. Many people died and those who survived were left with severely affected lungs, brain, eyes, muscles, gastrointestinal, neurological, reproductive and immune systems.