Correct Answer: (2) Kolkata
Solution:Two Indian cities Mum-bai and Kota have been named among the world's most crowded in a list topped by Dhaka, said World Economic Forum (WEF) citing UN Habitat data in May 2017. With a population density of 44,500 people per square kilometre, Dhaka, the capital of Bangladesh, is the most crowded city on the planet, followed by India's financial capital Mum-bai, home to 31,700 people per square kilometre at the second place.