Which geographic feature predominantly covers the western region of Canada?

The Rocky Mountains prominently cover the western region of Canada due to their significant and continuous range that stretches from the northernmost parts of British Columbia down to the United States border. Known for their towering peaks and rugged terrain, the Rocky Mountains have a profound influence on the geography, climate, and ecosystems of the area. This mountain range is also crucial for Canadian culture and economy, with activities such as tourism, skiing, and natural resource extraction being prominent in the region.

While the Great Lakes form an important geographical feature, they are primarily located in the eastern part of Canada and the northeastern United States, which distinguishes them from the western region. The Prairies, characterized by vast grasslands, also occupy areas in the west but are located more centrally within Canada, distinct from the mountainous areas. The Canadian Shield, known for its rugged terrain and numerous lakes, covers a large portion of eastern and northern Canada, making it less relevant to the specific focus on the western region.