Final answer:
The West Region of the U.S. includes diverse landforms such as the Basin and Range province, Colorado Plateaus, and Cascade-Sierra Mountains.
Step-by-step explanation:
The West Region of the United States is characterized by diverse landforms. Three notable landforms in this area include the Basin and Range province, which is known for its series of parallel mountain ranges and intervening valleys; the Colorado Plateaus, featuring high desert with deep canyons including the Grand Canyon; and the Cascade-Sierra Mountains, a major mountain range that includes prominent peaks such as Mount Rainier and Mount Whitney.