Multiple choice The Himalaya is the highest mountain range in the world busiest mountain range in the world smallest mountain range in the world none of these Reveal answer Fill a bubble to check yourself A Correct answer Explanation The Himalaya mountain range contains the world's highest peaks including Mount Everest (8,849m), K2, and Kangchenjunga. It stretches across five countries in South Asia and is home to nine of the ten highest peaks on Earth.