Which process utilizes heated water from the Earth's interior to generate power?

Geothermal energy is the correct answer because it specifically refers to the utilization of heat from the Earth's interior to generate power. This process involves harnessing steam or hot water from underground reservoirs, which can then be used to turn turbines and generate electricity.

This method exploits the natural heat produced by the Earth, providing a sustainable and renewable energy source that can be consistent and reliable, unlike some other energy types that depend on weather conditions or other external factors.

Biomass energy involves the combustion of organic materials to produce electricity, which is unrelated to the Earth's internal heat. Hydroelectric power uses flowing water to generate energy, relying on the potential energy of water rather than thermal energy. Fossil fuel combustion involves burning coal, oil, or natural gas for energy and does not utilize thermal energy from geothermal sources. This distinction emphasizes the unique nature of geothermal energy as a direct tapping into the Earth’s heat for power generation.