Answer:
d. It combined the elements of cultural simplicity and harmony with the environment.
Step-by-step explanation:
Mary Colter was an American architect and designer, at a time when very few women were professional architects. She was inspired by Native American motives, and she was extremely influential in the development of Spanish Colonial Revival and Mission Revival architecture. Colter often used rustic elements that exhibited cultural simplicity and harmony with the environment. Her style became very popular throughout the Southwest.