The correct answer is (b). Rajaji National Park is a national park in India, located in the foothills of the Himalayas in the state of Uttarakhand. It is shared by the districts of Dehradun, Haridwar, Pauri Garhwal, and Nainital. The park was established in 1983 and is home to a variety of wildlife, including tigers, leopards, elephants, deer, and monkeys. It is also a popular destination for trekking and birdwatching.
The other options are incorrect. The Valley of Flowers National Park is located in the Chamoli district of Uttarakhand. The Corbett National Park is located in the Nainital district of Uttarakhand. The Govind National Park is located in the Chamoli and Uttarkashi districts of Uttarakhand.