The correct option is C Hindustan Republican Association
The Kakori Train Conspiracy was political robbery and the incident took place at the small town Karori which was only 16 km away from the Lucknow on August 9, 1925. It was organised by revolutionary organisation i.e., Hindustan Republican Association (HRA) under the leadership of Ram Prasad Bismil and supported by Ashfaqulla Khan, Rajendra Lahiri, Chandrashekhar Azad, etc