The correct option is D Ras Behari Bose
Kartar Singh Sarabha was the editor of a weekly newspaper named Ghadar in San Francisco. It was published in various languages including Hindi, Punjabi and so on to further the nationalistic fervour. Ras Behari Bose was one of the key leaders who led the Ghadar party. He lived in a hideout in Benaras and sent messengers to various towns and cities to sow the seeds of revolution in the minds of the youth.