Correct Answer: (a) Lala Lajpat Rai
Solution:Lala Lajpat Rai has called Congress Conferences as the "Annual National Festival of Educated Indians." Lala Lajpat Rai, also known as Punjab Kesari (Lion of Punjab), was a prominent nationalist leader, freedom fighter, and social reformer. Rai played a crucial role in India's independence movement, particularly through his leadership in the extremist wing of the Indian National Congress (INC) alongside Bal Gangadhar Tilak and Bipin Chandra Pal, forming the famous Lal-Bal-Pal trio. A staunch advocate of Swaraj, Rai also led protests against the Simon Commission in 1928, where he sustained fatal injuries. In addition to his political career, he was a social reformer who championed education and fought against caste discrimination. His writings and journalistic endeavours further galvanized public opinion against British rule.