On 24th January 1868 Keshab Chandra Sen laid the foundation stone of his mandir called the Tabernacle of New Dispensation. Keshab and his followers marched to the proposed spot early in the morning performing Sankirtan and this was the first Brahmo street procession and it was the first of its kind in Calcutta.

Indian Reforms Association aligns better with Sen's social reform activities. He established this association upon returning from Europe in 1870 to advocate for social progress in areas like education, women's rights, and temperance.

The Calcutta Unitarian Committee, jointly founded by William Adam and Rammohun Roy in September 1821, sought to bring together prominent Brahmins who were friends of Roy's and supporters of his agenda for the promotion of religious monotheism and social reform among Hindus. Thus, statement one is incorrect.