The headquarters of the Ghadar Movement was located at which of the following places?

Correct option is A

The headquarters of the Ghadar Movement was located in San Francisco, USA. The Ghadar Movement was a revolutionary movement by Indian immigrants in the United States and Canada, aiming to overthrow British rule in India.
The early movement was created by revolutionaries who lived and worked on the West Coast of the United States and Canada, but the movement later spread to India and Indian diasporic communities around the world.
The official founding has been dated to a meeting on 15 July 1913 in Astoria, Oregon, and the group would splinter into two factions the first time in 1914, with the Sikh-majority faction known as the “Azad Punjab Ghadar” and the Hindu-majority faction known as the “Hindustan Ghadar.”