Correct Answer: San Francisco

Solution : The correct option is San Francisco.

The Ghadar Movement was a significant revolutionary movement of Indian nationalists in the early 20th century. The Ghadar Movement had its roots among the Indian immigrant community, particularly in the United States and Canada, during the early 20th century.

Prominent figures such as Lala Har Dayal, Sohan Singh Bhakna, and Kartar Singh Sarabha spearheaded the movement.