Explanation
The Bhopal Gas Tragedy occurred in (b) 1984.
The Bhopal Gas Tragedy is one of the world's worst industrial disasters. On the night of December 2-3, 1984, a massive gas leak occurred at the Union Carbide India Limited (UCIL) pesticide plant in Bhopal, Madhya Pradesh, India. The gas leak was caused by the release of a toxic gas called methyl isocyanate (MIC) from a storage tank. The incident resulted in the immediate death of thousands of people and caused long-term health issues and environmental damage for many more.
It remains one of the most tragic and significant industrial accidents in history, drawing attention to industrial safety standards, corporate responsibility, and the need for effective disaster management.
Therefore, the Bhopal Gas Tragedy occurred in 1984 (option b).
