Which of the following describes hydropower?

Hydropower refers specifically to the energy produced by the movement of water, particularly through the use of dams or water turbines in rivers and streams. The kinetic energy generated by flowing or falling water is harnessed and converted into electricity, making it a key renewable energy source. This method of energy production takes advantage of water's natural flow and elevation changes, making it a widely used and efficient form of renewable energy.

The other options describe different forms of energy. The first option refers to solar energy, which is derived from the sun's radiation. The second option pertains to tidal energy, which is produced from the rise and fall of ocean tides. Lastly, geothermal energy involves harnessing heat from within the Earth. Each of these options represents distinct energy sources with different characteristics and methods of generation.