What was thep reason for the sa fety test at Reactor -4 of the Chernobyl 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 reason for the safety test at Reactor No. 4 of the Chernobyl power plant was to test the reactor's ability to operate under certain conditions and to assess its safety features. The test involved running the reactor at low power and then gradually increasing the power to simulate a potential emergency situation. This was done to ensure that the reactor could continue to operate safely and efficiently under various conditions.