The correct answer is: a) Opposed British rule through armed resistance.
The Babbar Akali Movement was a militant Sikh organization that opposed British rule in India through armed resistance. The movement was founded in 1920 by Baba Gurmukh Singh Ji, who was a prominent Sikh religious leader. The Babbar Akalis were known for their use of violence against British officials and collaborators. They were also involved in a number of armed clashes with the British Indian Army. The Babbar Akali Movement was eventually suppressed by the British in 1925, but it played an important role in the Indian independence movement.
Option b) is incorrect because the Babbar Akalis did not advocate for a separate Sikh state. They were opposed to British rule, but they were not interested in creating a separate Sikh state.
Option c) is incorrect because the Babbar Akalis were not primarily concerned with social reforms within Sikhism. They were focused on opposing British rule.
Option d) is incorrect because the Babbar Akalis did not collaborate with the Indian National Congress. They were a militant organization that was opposed to British rule.