All of the following power plants are considered thermal power plants because they heat the steam that works the generators,

a.) nuclear power plants
b.) coal burning power plants
c.) fossil fuel power plants
d.) hydroelectric power plants

Option D, Hydroelectric Power Plants

Explanation:

In a hydroelectric plant the water is not heated to produce steam which in turn will rotate the turbine of the generator.

However,  in a hydroelectric plant the kinetic energy of the water is used used to rotate the turbine of the generator which in turn rotate the coil placed between two magnets. This rotating coil produces electricity.

Rest in all other power plants, such as nuclear, coal burning and fossil fuel the  heat energy produced is used to heat the water to form high energy steam which will rotate the turbine of the generator.

Thus, option D Hydroelectric Power Plants is the correct answer.

the answer would be   10%