Correct answer: C. 1927 CE
Explanation: The direct answer is option C: 1927. Mahad Satyagraha was led by Dr B. R. Ambedkar in Maharashtra to assert the right of Dalits to use public water sources, especially the Chavdar Tale tank. In March 1927, participants drank water from the tank as a public statement against untouchability and social exclusion. The fact chain is: Ambedkar → equal access to public water → protest at Mahad → 1927. Option A, 1924, is not the year of the Mahad Satyagraha. Option B, 1925, is also incorrect. Option C, 1927, is correct. Option D, 1932, is associated with later constitutional and political developments, not the main Mahad event. Memory cue: Ambedkar, water rights and Mahad—1927.