Which energy transformation will occur when you let a rubber band go

D. Elastic energy - mechanical Energy

Explanation:

When you let the rubber band go, that is kinetic energy. And, Mechanical energy is the sum of kinetic and potential energy in an object that is used to do work. In other words, it is energy in an object due to its motion or position, or both.

a boiling water reactor does not boil the water. a pressurized water reactor boils the water faster. a pressurized water reactor is heated directly by the core. a pressurized water reactor does not use fission.