The correct answer is The Untouchables. Jyotirao Phule was a prominent social reformer in 19th-century India, known for his fierce criticism of caste discrimination and his advocacy for the rights of marginalized communities. He authored several powerful texts that articulated his revolutionary ideas. While Gulamgiri (Slavery), Shetkaryacha Asud (Cultivator's Whipcord), and Brahmananche Kasab (The Slaughter of the Brahmins) are indeed his works, directly addressing the social and economic injustices prevalent in his time, The Untouchables was written by B.R. Ambedkar, another key figure in the fight against caste oppression, though his work built upon the foundational critiques established by Phule.

Phule's writings focused on dismantling the oppressive caste system and advocating for education and social justice for the lower castes. His works are considered seminal texts in the history of Indian social reform. Ambedkar, while deeply influenced by Phule's ideas, forged his own path, and his "Untouchables" is an important contribution separate from Phule's body of work.