The correct option is C Repairing leaking pipes
Water conservation is the process of preventing wastage of water and using it wisely.
Water conservation can be done by:
1) Repairing leaking pipes and taps.
2) Taking short showers.
An average adult human being needs atleast two litres of water daily, to stay healthy. So, drinking less amount of water is not an effective method to save water. Also, watering the plants is important for plants to grow.