Answer : 2. "Arunachal Pradesh"
Explanation :

Recently, Arunachal Pradesh has achieved an important milestone, becoming the first state in North-East India and 10th in the country to achieve 100% saturation of water to every household under the Jal Jeevan Mission. Chief Minister Pema Khandu thanked Prime Minister Narendra Modi for his guidance and support and credited the dedication of Team Arunachal. Launched on August 15, 2019, the mission aims to provide assured tap water supply to every rural household in India by 2024, promoting a better quality of life.