The question asks about the founding city of the Prarthana Samaj, a significant socio-religious reform movement in 19th century India. The Samaj emphasized the spiritual equality of all castes and advocated for monotheism.
The Prarthana Samaj movement originated in one of the major presidencies of British India. Considering the historical context of reform movements during the 19th century, Bombay (now Mumbai) was a major hub for intellectual and social activities.
The Prarthana Samaj was established in Bombay. This city was a center for intellectual discourse and social reform initiatives during that era.
The other options, Kanpur, Mysore, and Jodhpur, were not the primary centers for the founding of this specific movement in the 19th century.
Raja Ram Mohan Roy was an active social reformer who spoke greatly for the problems faced by women. He was an inseparable agent who brought down the social evil of 'sati'. The reform association founded by him was: