What is the world's largest mountain range (by length)? 

Correct option is A

The Andes is the longest mountain range in the world, stretching over 7,000 kilometers (4,300 miles) along the western coast of South America. It surpasses other mountain ranges in length, including the Himalayas, Rockies, and Alps.

Information Booster:

• The Andes runs through seven countries: Venezuela, Colombia, Ecuador, Peru, Bolivia, Chile, and Argentina.

• It is the longest continental mountain range, forming a significant part of South America's geography.

• The Andes also have the highest peak in the Western Hemisphere, Aconcagua (6,961 meters).

• The range is crucial for South American biodiversity and climate patterns.

• It plays a significant role in the region's agriculture, providing water resources through snowmelt.

• Himalayas: The Himalayas are the highest mountain range, but not the longest.

•  Rockies: The Rockies are extensive in North America but shorter than the Andes.

•  Alps: The Alps are much shorter in length compared to the Andes.