Detailed Explanation:

Answer: Option 1 — Agitation against the Partition of Bengal

The 'Swadeshi' (use of indigenous goods) and 'Boycott' (of British goods and institutions) were first adopted as organized methods of political struggle during the Anti-Partition Movement (1905-1911). When Lord Curzon partitioned Bengal in 1905 to divide Hindus and Muslims, it sparked massive protests. Leaders like Surendranath Banerjee, Bipin Chandra Pal, and Lala Lajpat Rai mobilized people to boycott British textiles, promote indigenous industries, and establish Swadeshi enterprises. This movement marked the shift from petitioning to mass mobilization in India's freedom struggle. While earlier leaders had occasionally promoted indigenous goods, the systematic use of Swadeshi and Boycott as political weapons began with this movement. The Home Rule Movement (1916), Non-Cooperation Movement (1920), and Simon Commission protests (1928) came much later and adopted these methods after they had already been established.