The correct option is D Dr Rajendra Singh
Dr Rajendra Singh brought the water revolution in Rajasthan. He is also known as the “Waterman of India”. He formed an organisation called “Tarun Bharat Sangh”. Dr Rajendra Singh started a water conservation campaign, the revival of rivers, forest and wildlife conservation. It built eleven thousand johads or rainwater storage in the villages of Rajasthan. He won the “Stockholm Water Prize” for his contributions.