Explanation:

Namami Gange Programme (NGP) ?‘Namami Gange Programme’ is an Integrated Conservation Mission. It was approved as a ‘Flagship Programme’ by the Union Government in June 2014 with budget outlay of Rs.20,000 Crore. It aims to accomplish the twin objectives of effective abatement of pollution, conservation and rejuvenation of National River Ganga.

• It is being operated under the Department of Water Resources, River Development and Ganga Rejuvenation, Ministry of Jal Shakti.

• The program is being implemented by the NMCG and its state counterpart organizations i.e State Program Management Groups (SPMGs).

• Option 1st is correct: The Namami Gange Programme is spearheaded by the Ministry of Jal Shakti, aiming to clean and rejuvenate the Ganga River.

• Option 2nd is incorrect: Namami Gange covers villages mainly along the Ganga, focusing on states like Uttarakhand, Uttar Pradesh, Bihar, Jharkhand, and West Bengal, not primarily Odisha.

• Option 3rd is correct: It aims to make villages on the banks of the river Ganga open defecation-free. One of the goals is to improve sanitation by making these villages open defecation-free.

• Option 4th is correct: The program aims to transform villages into ideal models, called Ganga Grams.