The summit of Mount Everest, the world's highest peak, lies within which country, on its border with China?

Mount Everest, the world's highest peak at 8,849 metres, has its summit lying on Nepal's border with China, in the Mahalangur Himalayas section of the Himalayan range; the Nepali side of the mountain lies in Sagarmatha National Park in Solukhumbu district, while the Chinese side lies in the Tibet Autonomous Region. This is the correct answer because Nepal is the country whose territory directly meets China precisely at the summit line, making Everest simultaneously a Nepali and a Chinese-administered peak depending on which face is being referenced, though it is most commonly associated with Nepal internationally due to the popularity of the southern climbing route from the Khumbu region. The mountain is known locally as Sagarmatha in Nepali and Chomolungma in Tibetan, both names predating the English name 'Everest', which was assigned in the 19th century by the Great Trigonometrical Survey of India in honour of Sir George Everest, a former Surveyor General of India. India is incorrect as the answer because although India conducted the historic survey that measured and named the peak, and India's border lies relatively close to the region, no part of Everest's summit or slopes falls within Indian territory. Bhutan is incorrect because it lies further east in the Himalayan chain and does not share any border with the Everest massif at all. Pakistan is incorrect and geographically distant, since Pakistan's highest peaks lie in the Karakoram range in its north (including K2, the world's second-highest peak), an entirely different mountain system far to the west of the Everest region. A frequent exam confusion is mixing up K2 (Pakistan, Karakoram) with Everest (Nepal-China, Himalayas) since both are elite 8,000-metre peaks in South Asia, but they belong to different ranges and different countries entirely.