Correct Answer: (c) Lala Lajpat Rai
Solution:Lala Lajpat Rai has written the book "Unhappy India". In this book he compared Indian society with contemporary USA and Britain. Lala Lajpat Rai was an Indian author, freedom fighter, and political activist. He was a key figure in the Indian independence movement. He also wrote Young India, an autobiography, and biographies of Mazzini, Garibaldi, Shivaji, and Shrikrishna. Unhappy India was written as a response to Mayo's book, which some say was biased and depicted only India's problems. In Unhappy India, Rai discussed Indian culture, civilization, and life.