The correct answer is Ananda Mohan Bose, Sib Chandra Deb and Umesh Chandra Dutta. Explanation & Key Takeaways: • The Sadharan Brahmo Samaj was established in 1878 by dissatisfied followers of Keshab Chandra Sen who opposed his autocratic leadership and deviation from Brahmo principles. • Its primary founders were Ananda Mohan Bose, Sib Chandra Deb, and Umesh Chandra Dutta, who sought to uphold the democratic and liberal ideals of Brahmoism. • The organization emphasized equality, rationalism, and monotheism, which were core tenets of the Brahmo faith. • The Sadharan Brahmo Samaj also advocated for social reform, including the abolition of caste discrimination, child marriage, and promotion of women's education. • This division marked a pivotal moment in the history of the Brahmo movement, leading to a more progressive and inclusive approach within the Samaj. Related Concepts: • Brahmo Samaj: • Founded by Raja Ram Mohan Roy in 1828, Brahmo Samaj was a socio-religious reform movement in India advocating monotheism and rejecting idol worship. • It sought to promote rational thinking, social justice, and equality among all individuals. • Keshab Chandra Sen: • A prominent Brahmo leader, Keshab Chandra Sen emphasized the need for spiritual and social reform. • His leadership style and theological deviations led to the split within the Brahmo Samaj in 1878. • Ananda Mohan Bose: • Ananda Mohan Bose was an educator, politician, and one of the prominent leaders of the Sadharan Brahmo Samaj. • He played a significant role in promoting education and social reform in India. • Social Impact: • The Brahmo Samaj contributed significantly to India's socio-religious reform movements during British rule. • It influenced other reform movements such as the Arya Samaj and helped shape modern Indian society.