Detailed Explanation:

Answer: Option 1 — Gopal Baba Walangkar

Gopal Baba Walangkar published the monthly journal Vital-Vidhvansak (Destroyer of Brahmanical or Ceremonial Pollution) in 1888, which was the first journal specifically targeted at untouchable communities. He was a pioneering social reformer who addressed caste discrimination and raised consciousness about the rights and dignity of Dalits through his writings in this journal and other publications.

📝 Short Notes: Early Dalit Social Reform Movement

• Gopal Baba Walangkar (1840-1900): First intellectual rebel from the Dalit community to launch systematic criticism of the caste system; considered the pioneer of Dalit activism in Maharashtra.
• Vital-Vidhvansak (1888): Monthly journal meaning 'Destroyer of Ceremonial Pollution'; first publication targeting untouchable audiences; aimed at raising social consciousness.
• Vital Viduvansan (1889): Pamphlet with 26 questions addressed to Maharashtrian elites, protesting the position of untouchables in society.
• Walangkar's Ideology: Concluded from reading Hindu texts that caste was contrived by Aryan invaders to control indigenous Anaryan people.
• Other Contributions: Wrote articles for Marathi newspapers like Sudharak and Deenbandhu; composed inspirational Marathi couplets for the masses.
• Historical Significance: Laid the foundation for later Dalit movements led by figures like Jyotiba Phule and Dr. B.R. Ambedkar.