Satya Shodhak Samaj organized
Explanation
Satya Shodhak Samaj was founded by Jyotirao Phule in 1873 in Maharashtra to challenge the caste hierarchy and advocate for the social rights of lower castes and women. Option (b) is a common distractor because, while Phule opposed caste discrimination, specific "temple-entry movements" were 20th-century phenomena led by later figures like B.R. Ambedkar or the Vaikom Satyagrahis. This question tests the ability to correctly identify the regional focus and core objectives of 19th-century socio-religious reform movements.