Who is associated with the anti-caste movement in 19th century?

Jyotiba Phule

The correct answer is Option (2) → Jyotiba Phule

Mahatma Gandhi: While Gandhiji addressed caste issues in the 20th century.

Raja Rammohan Roy: Though a social reformer in the 19th century, Roy primarily focused on issues like sati (widow burning) and advocated for religious reform within Hinduism. Caste reform wasn't his central cause.

Birsa Munda: Birsa Munda was a tribal leader who led a millenarian movement against the British Raj in the late 19th century. 

Jyotirao Phule, on the other hand, is known for his work against caste discrimination and advocating for education and equal rights for lower castes and women in the 19th century. He founded the Satyashodhak Samaj (Truth Seekers' Society) to promote these ideas.