Correct option is A
Uttar Pradesh officially declared the Gangetic Dolphin as its state aquatic animal to encourage awareness and protection efforts. This dolphin species is found in the Ganga River system and is endangered due to pollution and poaching. Explanation of options: (a) ✔ UP took formal conservation steps and made the declaration. (b) ✘ Though dolphins are seen in Uttarakhand waters, no official status. (c) ✘ Jharkhand is part of dolphin range but hasn't declared it. (d) ✘ West Bengal has dolphin presence but no such declaration.