The correct answer is: a) Swachh Bharat Mission.
The Swachh Bharat Mission (SBM) is a national campaign launched by the Government of India on 2 October 2014 to clean the streets, roads and infrastructure of the country. It aims to achieve an open defecation free (ODF) India by 2019.
The Odisha government has been working towards achieving ODF status for all Panchayats through the SBM. The state has made significant progress in this regard, and as of December 2017, 80% of Panchayats in the state have been declared ODF.
The SBM has been a major success in Odisha. It has helped to improve the sanitation situation in the state, and has also had a positive impact on the health and well-being of the people.
The other options are incorrect.
PMAY-G is the Pradhan Mantri Awas Yojana – Gramin, a government of India scheme launched in 2015 to provide financial assistance to the rural poor to construct pucca houses.
Nirmal Gram Yojana was a government of India scheme launched in 1999 to improve sanitation in rural areas. It was replaced by the SBM in 2014.