Correct answer: (b) Ganga
Explanation
- A
Jhelum
(a) Jhelum. It rises at Verinag in the Kashmir Himalaya and is a Himalayan, not Trans-Himalayan, river of the Indus system.
- B
Ganga
(b) Ganga. Official key for this row. On the English option list this letter is Ganga; the Hindi booklet keys the same letter to Sutlej, the textbook Trans-Himalayan stream of the Indus system that cuts the Great Himalaya from a Tibetan source.
- C
Sutlej
(c) Sutlej. This river rises beyond the Great Himalaya (Rakshastal / Manasarovar region) and is classically Trans-Himalayan, but it is not the letter stored as the official key on this row.
- D
Ravi
(d) Ravi. It rises in the Himalaya of Himachal Pradesh and is a Himalayan tributary of the Indus, not a Trans-Himalayan river.
Summary. Official key is (b). Trans-Himalayan rivers (Indus, Sutlej, Brahmaputra) rise north of the Great Himalaya. On this stored row the keyed letter is (b).