Which mountain range serves as a natural border between India and China?

The Himalayas are a significant mountain range that stretches across the northern part of the Indian subcontinent, forming a natural border between India and China. This mountain range is not only the highest in the world but also plays a crucial role in the geography and climate of the region. The Himalayas are approximately 2,400 kilometers (1,500 miles) long and are home to the world's highest peaks, including Mount Everest, which stands at 8,848 meters (29,029 feet).

The Himalayas are formed by the collision of the Indian and Eurasian tectonic plates, which began about 50 million years ago and continues to this day. This ongoing process has resulted in the formation of a massive mountain range that acts as a natural barrier between the Indian subcontinent and the Tibetan Plateau, which is part of China. The Himalayas are not only a geographical feature but also a cultural and ecological boundary, influencing the climate, biodiversity, and human settlements on both sides.

Understanding the geographical significance of the Himalayas is essential for comprehending the natural borders between countries. The Himalayas serve as a natural border between India and China, separating the Indian subcontinent from Tibet, which is an autonomous region of China. This geographical feature is crucial for understanding the geopolitical and environmental context of the region.

Other mountain ranges mentioned in the options, such as the Alps, Rockies, and Pyrenees, are located in different parts of the world and do not serve as natural borders between India and China. The Alps are in Europe, the Rockies are in North America, and the Pyrenees are between France and Spain. These ranges are significant in their own right but are not relevant to the border between India and China.

In summary, the Himalayas are the correct answer as they form a natural border between India and China, separating the Indian subcontinent from the Tibetan Plateau. This geographical feature is crucial for understanding the natural and geopolitical boundaries of the region.