Correct option is A
The correct answer is (a) 1986.
· The Chernobyl nuclear disaster took place on April 26, 1986, in the city of Pripyat, Ukraine, which was part of the Soviet Union at the time.
· It occurred at the Chernobyl Nuclear Power Plant when a reactor exploded during a safety test.
· The explosion released large amounts of radioactive particles into the atmosphere, leading to severe environmental contamination and long-term health consequences for those exposed to the radiation.
Information Booster:
· The accident is considered the worst nuclear disaster in history. It resulted in the evacuation of thousands of people from the surrounding areas.