primary reason for the Safety test at Reactor 4 of the Chernoby power plant? To upgrade the reactor's safety features To test the cooling system under high power To simulate an emergency evacuation scenario To determine if the plant could produce enough energy without power supply

The primary reason for the safety test at Reactor 4 of the Chernobyl power plant was to test the reactor's safety features. The test was intended to assess the reactor's ability to withstand a sudden power surge and to determine whether the emergency cooling systems were functioning properly. However, the test went horribly wrong, leading to the catastrophic explosion and fire that released radioactive particles into the atmosphere.