The Swadeshi Movement in the early 20th century encouraged the boycott of foreign goods and promoted:

Self-reliance and revival of local industries
Armed rebellion against the British
Cooperation with British authorities
Social and religious reforms

The correct answer is: a) Self-reliance and revival of local industries.

The Swadeshi Movement was an Indian nationalist movement that originated in Bengal in 1905. It was a boycott of British goods and promoted the use of Indian-made goods instead. The movement was successful in reviving the Indian textile industry and other industries. It also helped to raise national consciousness and promote Indian independence.

Option b) is incorrect because the Swadeshi Movement did not promote armed rebellion against the British. The movement was largely peaceful, although there were some violent incidents.

Option c) is incorrect because the Swadeshi Movement did not cooperate with British authorities. The movement was opposed to British rule and sought to achieve Indian independence.

Option d) is incorrect because the Swadeshi Movement was not primarily concerned with social and religious reforms. The movement was focused on economic and political independence.