The correct answer is (b), Mana.
Mana is a village in the Chamoli district of Uttarakhand, India. It is located in the Garhwal Himalayas, at an altitude of 3,880 meters (12,734 feet). Mana is the last village in India before the Indo-China border. It is also the starting point for the Nanda Devi trek.
The highest herbal park in Uttarakhand is being set up in Mana. The park will be spread over an area of 100 acres and will house a variety of herbs and medicinal plants. The park is expected to be completed by 2023.
The other options are incorrect. Chaukori is a town in the Almora district of Uttarakhand. It is located at an altitude of 2,400 meters (7,874 feet). Munsyari is a town in the Pithoragarh district of Uttarakhand. It is located at an altitude of 2,800 meters (9,186 feet). Dhanaulti is a town in the Nainital district of Uttarakhand. It is located at an altitude of 2,286 meters (7,505 feet).