Q. In which city of Bihar the recently inaugurated National Dolphin Research Centre is located ?

The correct answer is: b) Patna

Explanation: The National Dolphin Research Centre (NDRC) has been recently inaugurated in Patna, the capital city of Bihar. This research center is dedicated to the conservation and study of the Gangetic dolphins, which are an endangered species and also the national aquatic animal of India. The location in Patna is significant as the Ganga River, which flows through the city, is a natural habitat for these dolphins. This initiative aims to promote awareness, research, and conservation efforts for the protection of these aquatic mammals.