________, established by Atmaram Pandurang in Bombay (Mumbai) in 1867 , was a movement for religious and social reform. ​

Correct option is A

​The correct answer is (a) Prarthana Samaj​

Explanation: 

• The Prarthana Samaj was founded by Atmaram Pandurang in 1867 in Mumbai with the primary objective of reforming Hinduism by eliminating its superstitions, rituals, and social ills.
• The Samaj was formed as a platform for people to engage in spiritual practices, prayers, and discussions on social and religious reform.
• The word "Prarthana" translates to prayer, reflecting the Samaj's emphasis on devotion and prayer while promoting a modernized and simplified approach to religion.

Analysis of Other Options:

• Brahmo Samaj (Incorrect) – Founded by Raja Ram Mohan Roy in 1828, it focused on monotheism and abolishing Sati.
• Arya Samaj (Incorrect) – Founded by Swami Dayananda Saraswati in 1875, it focused on Vedic purity, Shuddhi movement, and rejecting idol worship.
• Satya Shodhak Samaj (Incorrect) – Founded by Jyotirao Phule in 1873, it aimed at uplifting lower castes and abolishing caste discrimination in Maharashtra.