Natural resources are materials or substances that occur in nature and are utilized by humans for various purposes. They are essentially derived from the environment and can be classified into renewable and nonrenewable resources. Examples of natural resources include air, water, soil, minerals, and sunlight.

Among the given options, option 'C' - Sunlight can be considered as an example of a natural resource. Let's delve into the reasons why sunlight fits the definition of a natural resource:

1. Importance in sustaining life: Sunlight is essential for various biological processes and is a fundamental requirement for the survival of all living organisms, including human beings. It plays a crucial role in photosynthesis, which is the process through which plants convert sunlight into energy to grow and produce oxygen.

2. Energy source: Sunlight is a significant source of renewable energy. Through technologies such as solar panels and solar cells, sunlight can be harnessed and converted into electricity to power homes, industries, and even vehicles. This renewable energy source helps reduce reliance on nonrenewable resources like fossil fuels.

3. Environmental benefits: Sunlight is a clean and sustainable energy source, unlike fossil fuels that release harmful pollutants when burned. By utilizing sunlight as an energy resource, we can reduce air pollution, greenhouse gas emissions, and mitigate the impacts of climate change.

4. Economic value: Sunlight has significant economic value as it can be utilized for various purposes. Besides generating electricity, sunlight is used in industries such as agriculture (for crop growth), manufacturing (solar-powered devices), and tourism (solar-powered attractions). It also supports the solar energy industry, creating job opportunities and contributing to economic growth.

5. Recreation and well-being: Sunlight plays a vital role in human well-being by providing vitamin D, improving mood, and supporting overall health. It also offers recreational opportunities, as people engage in outdoor activities and enjoy the warmth and beauty of the sun.

In conclusion, sunlight is an example of a natural resource due to its importance in sustaining life, its role as an energy source, its environmental benefits, economic value, and its positive impact on human well-being. Utilizing sunlight efficiently and harnessing its potential can contribute to a more sustainable and environmentally friendly future.