Which energy source is derived from sunlight and converted into thermal or electrical energy?

Solar energy is the correct answer because it directly originates from sunlight, which can be harnessed using various technologies. This energy can be converted into thermal energy through solar thermal systems, which use sunlight to heat water or air for residential or industrial use. Alternatively, solar panels, or photovoltaic cells, convert sunlight directly into electrical energy, allowing for a sustainable and renewable power source.

In contrast, the other options represent different energy sources. Hydroelectric power relies on the energy of flowing water, typically from dams or rivers. Geothermal energy is sourced from the heat stored beneath the Earth's surface, tapping into natural reservoirs of hot water or steam. Natural gas is a fossil fuel formed from the remains of ancient plants and animals and is used for heating and generating electricity but does not derive from sunlight. Thus, solar energy stands out as the only option directly linked to sunlight.