The correct answer is a, b and d. As of July 2018, a total of 1092 World Heritage sites exist across 167 countries. Italy, with 54 World Heritage sites has the most of any country (up to July 2018). India has 38 World Heritage sites (up to July 2018). Hence statement c is incorrect. UNESCO (United Nations Educational Scientific and Cultural Organization) is a specialized agency of the United Nations and was came into force on November 04, 1946. ​Additional Information The list of UNESCO World Heritage Sites of India are as follows- Cultural World Heritage Sites in India Taj Mahal, Agra; Khajuraho, Madhya Pradesh; Hampi, Karnataka; Ajanta Caves, Maharashtra; Ellora Caves, Maharashtra; Bodh Gaya, Bihar; Sun Temple, Konark, Odisha; Red Fort Complex, Delhi; Sanchi, Madhya Pradesh; Chola Temples, Tamil Nadu; Group of Monuments at Mahabalipuram, Tamil Nadu; Humayun’s Tomb, New Delhi; Jantar Mantar, Jaipur, Rajasthan; Agra Fort, Uttar Pradesh; Fatehpur Sikri, Uttar Pradesh; Rani Ki Vav, Patan, Gujarat; Group of Monuments at Pattadakal, Karnataka; Elephanta Caves, Maharashtra; Nalanda Mahavihara (Nalanda University), Bihar; Chhatrapati Shivaji Maharaj Terminus (formerly Victoria Terminus), Maharashtra; Mountain Railways of India; Qutub Minar and its Monuments, New Delhi; Champaner-Pavagadh Archaeological Park, Gujarat; Hill Forts of Rajasthan; Churches and Convents of Goa; Rock Shelters of Bhimbetka, Madhya Pradesh; The Victorian and Art Deco Ensemble of Mumbai; The Pink City – Jaipur; The Historic City of Ahmedabad; Capitol Complex, Chandigarh Natural World Heritage Sites in India Kaziranga Wild Life Sanctuary, Assam; Sundarbans National Park, West Bengal; Great Himalayan National Park, Himachal Pradesh; Manas Wild Life Sanctuary, Assam; Keoladeo National Park, Bharatpur, Rajasthan; Nanda Devi and Valley of Flowers National Parks, Uttarakhand; Western Ghats Mixed World Heritage Site in India Khangchendzonga National Park Key Points As of June 2020, a total of 1,121 World Heritage Sites exist across 167 countries. In World, 869 cultural, 213 natural, and 39 mixed properties exist. The three countries with the most sites are China, Italy (both 55) and Spain (48). India has 38 world heritage sites that include 30 Cultural properties, 7 Natural properties and 1 mixed site.