Question

The United States uses which source of energy to produce almost 40 percent of its electricity?

Answer 1

The three major categories of energy for electricity generation are fossil fuels (coal, natural gas, and petroleum), nuclear energy, and renewable energy sources. Most electricity is generated with steam turbines using fossil fuels, nuclear, biomass, geothermal, and solar thermal energy.

Answer 2

Here is the your answer.
It is nuclear energy.
Hope it helps you.