Answer:
Most of the US electric energy is produced with the help of coal, natural gas and nuclear energy.
Step-by-step explanation:
The blades of the turbine which are connected to the electric generator are moved with the help of energy sources.
The heat which is produced with the help of coal, natural gas and the nuclear energy will help in producing steam and this steam will move the blades of turbines and by this phenomena the electrical energy is produced.
The above mentioned sources such as coal, natural gas and the nuclear energy are mostly used in US to produce electric energy.