Why Correct: Gurusaday Dutta founded the Bratachari movement in 1932 to promote physical culture, folk traditions, and national integration through rhythmic exercises and songs.
Distractor Analysis: Bal Gangadhar Tilak led the Swadeshi movement and organized Ganesh Chaturthi festivals. Dayananda Saraswati founded the Arya Samaj in 1875. Swami Vivekananda established the Ramakrishna Mission in 1897.
Takeaway: The Bratachari movement originated in Bengal and was recognized by Rabindranath Tagore, who incorporated its principles at Santiniketan.