Correct Answer: Option C — Kangto. Kangto is correct because it is is commonly listed at about 7,090 metres. It is also associated with belongs to the Kangto massif of the eastern Himalaya, which provides a second reliable identifying clue. These features are standard physical-geography facts and are useful for map-based and statement-based competitive-exam questions. Why the other options are incorrect: Option A — Reo Purgyil: It is has an elevation of about 6,816 metres; this is the specific geographical association of Reo Purgyil. Option B — Mount Saramati: It is is commonly given an elevation of about 3,826 metres; this is the specific geographical association of Mount Saramati. Option D — Sandakphu: It is has an elevation of about 3,636 metres; this is the specific geographical association of Sandakphu. Exam Takeaway: Connect Kangto with “is commonly listed at about 7,090 metres” for quick revision.