Correct Answer: Both assertion and reason are correct, and the reason is the correct explanation of the assertion.

Solution : The correct answer is (a) Both assertion and reason are correct, and the reason is the correct explanation of the assertion.

The assertion states that renewable energy sources, such as solar and wind power, play a crucial role in reducing carbon emissions and mitigating climate change, which is correct. Renewable energy sources are considered a key solution to combat climate change because they produce little to no greenhouse gas emissions during operation. Solar power and wind power, in particular, are abundant and readily available sources of renewable energy that can replace fossil fuel-based energy generation, reducing carbon emissions and contributing to mitigating climate change.

The reason provided states that renewable energy sources are abundant, sustainable, and do not deplete natural resources, and this is the correct explanation of the assertion. Unlike fossil fuels, which are finite resources and contribute to environmental pollution and climate change, renewable energy sources are abundant and sustainable. Sunlight and wind are naturally occurring resources that can be harnessed indefinitely without depleting natural resources. This sustainable characteristic of renewable energy sources makes them an attractive alternative to fossil fuels for long-term energy generation.

Therefore, both the assertion and reason are correct, and the reason serves as the correct explanation for why renewable energy sources play a crucial role in reducing carbon emissions and mitigating climate change.