Which mountain range runs along the western coast of Canada?

The Rocky Mountains are the correct answer because they are a major mountain range that extends from Canada down into the United States. Specifically, this range runs along the western edge of North America, providing a natural boundary between the provinces of British Columbia and Alberta in Canada. The Rocky Mountains are known for their stunning landscapes, deep valleys, and diverse ecosystems, making them a significant feature of Canada's geography and an important part of its natural heritage.

In contrast, the Andes Mountains are located in South America, primarily in countries like Chile and Argentina, which makes them unrelated to Canada's geography. The Appalachian Mountains are situated in eastern North America, stretching from Canada down to the southern United States. Similarly, the Sierra Nevada Mountains are located in the western United States, primarily in California, and do not extend into Canada. Hence, the Rocky Mountains are unique in being the primary mountain range on Canada's west coast.