Which of the following is an example of a renewable energy source?

Solar energy is considered a renewable energy source because it is harnessed from the sun, which is a naturally occurring and inexhaustible resource. The sun emits an enormous amount of energy each day, and solar panels can convert this energy into electricity without depleting the resource. As long as the sun exists, solar energy can be harnessed continually, making it sustainable over the long term.

In contrast, other energy sources like natural gas and coal are fossil fuels that take millions of years to form and are extracted from the earth, leading to their eventual depletion. Nuclear energy, while not a fossil fuel and capable of delivering power without greenhouse gas emissions during operation, relies on finite resources like uranium, which must be mined and processed, limiting its renewability. Therefore, solar energy stands out as a truly renewable option among the choices.