Which of the following is an alternative energy source?

Solar energy is classified as an alternative energy source because it is renewable, sustainable, and produces minimal environmental impact compared to fossil fuels. It harnesses energy from the sun, which is an abundant resource and can be utilized in various technologies, such as photovoltaic cells and solar thermal systems.

This distinguishes solar energy from other options like natural gas, coal, and nuclear energy. Natural gas and coal are fossil fuels that contribute significantly to greenhouse gas emissions and environmental pollution. Nuclear energy, while low in carbon emissions during operation, still relies on finite resources and poses concerns related to radioactive waste disposal and potential accidents. In contrast, solar energy can be harnessed indefinitely and contributes to reducing reliance on these more harmful energy sources. Its ability to generate electricity without emissions during operation makes it a crucial component in the transition towards a more sustainable energy future.