Answer: (c) To serve as a central hub for sickle cell treatment and research

Explanation:
The National Institute of Sickle Cell Disease will coordinate awareness, screening, genetic counseling, and treatment of sickle cell anaemia, particularly in tribal populations.
(a) and (b) are unrelated.
(d) is under broader health legislation, not this institute.

Answer: (c) It involves a dam proposal on the Cauvery River opposed by Tamil Nadu
Explanation:
The Mekedatu project is a Karnataka-proposed dam on the Cauvery. Tamil Nadu opposes it fearing reduced water flow.
(a) and (d) are unrelated.
(b) refers to a different wildlife effort.

Answer: (a) Protection of river and marine dolphins through conservation and awareness

Explanation:
Project Dolphin focuses on preserving both riverine and marine dolphins, similar to the success of Project Tiger.
(b) and (d) are incorrect.
(c) has no official basis.

Answer: (c) Automatic train collision avoidance technology
Explanation:
KAVACH is India’s indigenous safety system that prevents collisions by alerting and automatically controlling train movements.
(a), (b), and (d) are unrelated innovations.

Answer: (c) Enhance India’s maritime strike capability in the Indo-Pacific
Explanation:
INS Vikrant strengthens blue-water naval operations and regional security presence in the Indian Ocean.
(a), (b), and (d) are incorrect roles.