Which renewable energy source is generated from the sun?

Solar energy is the correct choice because it specifically refers to the energy harnessed from sunlight. This energy is captured using various technologies, such as solar panels, which convert sunlight directly into electricity, or solar thermal systems, which use sunlight to heat a fluid to produce steam for power generation.

Wind energy, though renewable, is generated by the movement of air and is influenced by solar radiation, but it is not directly derived from the sun. Hydropower relies on the gravitational force of falling or flowing water rather than sunlight, while geothermal energy harnesses heat from the Earth’s interior, which is not solar-derived. Thus, solar energy is defined explicitly by its origin from the sun, making it the correct answer in this context.