Correct Answer: (c) Gonda
Solution:On 4th May 2017, 'Swachh Survekshan, 2017' result was announced by Ministry of Housing & Urban Affairs. Indore, Madhya Pradesh won the Crown of India's cleanest city. Whereas Gonda, Uttar Pradesh was graded as the most dirtiest city in India. Swachh Survekshan, 2023 report says, Indore and Surat were jointly awarded the cleanest city in India.