Q: What celestial body is the earth’s main source of energy?


Read this paragraph and choose the correct option from the provided answers:

The Sun is Earth’s main source of energy. The Sun gives us both light and heat. The Sun changes hydrogen into helium through nuclear fusion. This releases huge amounts of energy. The energy travels to Earth mostly as visible light. The energy is carried through the empty space by radiation . We can use sunlight as an energy resource, called solar energy.

 Choices:

- rivers

- ocean

- moon

- sun


A:
sun