The correct answer is (a) Eight.
The Rishikesh-Karnaprayag railway line is a 125 km long railway line under construction in Uttarakhand, India. It is a part of the Char Dham Railway project, which aims to connect the four Hindu pilgrimage sites of Kedarnath, Badrinath, Gangotri, and Yamunotri by rail.
The Rishikesh-Karnaprayag railway line will have eight stations: Rishikesh, Devprayag, Srinagar, Rudraprayag, Karanprayag, Pipalkoti, Sonprayag, and Gaurikund.
The construction of the Rishikesh-Karnaprayag railway line is being undertaken by the Rail Vikas Nigam Limited (RVNL). The project is expected to be completed by 2024.
The Rishikesh-Karnaprayag railway line will be a major boost to the tourism industry in Uttarakhand. It will also help to improve connectivity in the region and reduce travel time between Rishikesh and Karnaprayag.