The correct answer is option 1 i.e. 1. The Indian Independence League was formed at the Tokyo Conference of 1942 in Japan. The Indian Independence League (also referred to as IIL) was a political organisation operated from the 1920s to the 1940s to organise those living outside India into seeking the removal of British colonial rule over India. At the Tokya Conference of 1942, the Indian delegates and Rash Behari Bose had differences over Japan's role in the independence movement. At the Bangkok Conference of 1942, the India Independence League was formed. The conference further saw the adoption by the league of a thirty-four set resolution called the Bangkok Resolutions that attempted to define the role of the league within the Independence movement, relations with the nascent Indian National Army, and clarify the grounds and conditions for obtaining Japanese support for it. Further it attempted to clarify the relations of Japan and the Greater East Asia Co-Prosperity Sphere with a free India. During the Japanese Occupation in Malaya, the Japanese encouraged Indians in Malaya to affix the Indian Independence League.