Multiple choice Which is the tallest mountain in the world and straddles the border of China and Nepal? Mount Everest K2 Mount Kilimanjaro Mount Mitchell Reveal answer Fill a bubble to check yourself A Correct answer Explanation Mount Everest is the highest mountain above sea level on Earth, with an official elevation of 8,848.86 meters. It is located in the Himalayas, directly straddling the international border between China (Tibet) and Nepal.