Option c is the correct answer. V.S. Wakankar was an Indian archaeologist who first visited the Bhimbetka caves in 1957 and recognized their prehistoric significance. He noticed the rock paintings and realized that they were similar to those found in France and Spain. He conducted extensive excavations and surveys at the site and published his findings in various journals and books. He is regarded as the discoverer of the Bhimbetka caves and one of the pioneers of Indian rock art studies. Important Tips Madho Swaroop Vatsa was an Indian archaeologist and Sanskrit scholar who served as the Director-General of the Archaeological Survey of India from 1950 to 1954. He is especially well known for his participation in the excavations at Mohenjodaro, which he supervised from 1924. H.D. Sankalia was an Indian Sanskrit scholar and archaeologist specialising in proto- and ancient Indian history. He is considered to have pioneered archaeological excavation techniques in India, with several significant discoveries from the prehistoric period to his credit. He received the Ranjitram Suvarna Chandrak award in 1966 and the Padma Bhushan in 1974. V.N. Mishra was an Indian archaeologist who graduated from University of Pune. He is noted for his research into the Indus Valley civilization. He also excavated important archaeological sites such as Balathal, among others.