cgpsc 2025-2025 - The question asks for the UT with the lowest sex ratio based on Census 2011 data. - Sex ratio for Daman and Diu in 2011 was 618. - Sex ratio for Dadra and Nagar Haveli was 774, Andaman and Nicobar Islands was 876, and Chandigarh was 818 in 2011. - Comparing these, Daman and Diu had the lowest sex ratio.