Explanation:

 Correct Option: (a) Explanation:  Option (a) is correct. Chronology of important events  Alipore bomb conspiracy: Several leaders of the yugantar party including Aurobindo Ghosh were arrested in connection with bomb-making activities in Kolkata. Several of the activists were deported to the Andaman Cellular Jail.  Delhi-Lahore conspiracy case: The Delhi-Lahore Conspiracy, hatched in 1912, planned to assassinate the then Viceroy of India, Lord Hardinge, on the occasion of transferring the capital of British India from Calcutta to New Delhi. Involving revolutionary underground in Bengal and headed by Rashbehari Bose along with Sachin Sanyal, the conspiracy culminated on the attempted assassination on 23 December 1912 when a home-made bomb was thrown into the Viceroy’s Howdah when the ceremonial procession moved through the Chandni Chowk suburb of Delhi.  Kakori Train robbery: Chandra Sekhar Azad, Ramprasad Bismil, Jogesh Chatterjee, Ashfaqullah Khan, Banwari Lal, and their accomplices participated in the robbery of treasury money that was being transported by train. The looting took place between Kakori station and Alamnagar, within 40 miles (64 km) of Lucknow on 9 August 1925.  Chittagong Armoury raid: Surya Sen led Indian revolutionaries to raid the armory of police and auxiliary forces and to cut all communication lines in Chittagong on 18 April 1930.  Dalhousie Square Bomb Case: A bomb was thrown on the Calcutta Police Commissioner, Charles Tegart on 25 August 1930. Topic: Modern History Sub-Topic: Revolutionary Movements