Renewable energy sources are those that can be replenished naturally and are not depleted with their use. They are considered sustainable and have minimal impact on the environment.

The correct answer is option 'C' - Water, Sunlight, Wind. Let's discuss each of these sources in detail:

1. Water:
- Water is a renewable source of energy because it is constantly replenished by the water cycle, which involves evaporation, condensation, and precipitation.
- Water can be used to generate electricity through hydropower. This involves capturing the energy of flowing or falling water and converting it into mechanical or electrical energy using turbines and generators.
- Hydropower is a clean and sustainable source of energy that does not produce greenhouse gas emissions.

2. Sunlight:
- Sunlight is a renewable source of energy as it is constantly available and will not be depleted in our lifetime.
- Solar energy can be harnessed using photovoltaic (PV) cells, which convert sunlight directly into electricity. Solar panels are installed on rooftops or in open spaces to capture sunlight and generate electricity.
- Solar energy is clean, abundant, and does not produce greenhouse gas emissions.

3. Wind:
- Wind is a renewable source of energy because it is caused by the uneven heating of the Earth's surface by the sun, and it will not be exhausted in our lifetime.
- Wind turbines capture the kinetic energy of the wind and convert it into mechanical or electrical energy. The rotating blades of the wind turbine spin a generator, which produces electricity.
- Wind energy is clean, renewable, and does not produce greenhouse gas emissions.

In conclusion, water, sunlight, and wind are all renewable sources of energy. They are sustainable, constantly replenished by natural processes, and have minimal environmental impact compared to non-renewable sources like fossil fuels. Utilizing these renewable sources helps to reduce greenhouse gas emissions and mitigate climate change.

Renewable sources can be replenished in a short period of time. They are inexhaustible and do not cause pollution. Water, sunlight and wind are non-renewable sources of energy.