Answer- C
Every year on April 26, International Chernobyl Disaster Remembrance Day is observed to pay tribute to those who lost their lives.
Here are some crucial details about the incident: The Chernobyl Nuclear Power Plant previously known as the Vladimir Lenin Nuclear Power Plant, underwent a systems test failure on that fateful day.
This calamitous event which occurred during a standard safety examination of a nuclear reactor is now infamous as the Chernobyl disaster. The accident happened on April 26, 1986, at the Chernobyl Nuclear Power Plant in the former Soviet Union.