Final answer:
The statement is true; Great Zimbabwe contains three distinct architectural groupings, each from different time periods, reflecting the site's complex history and the growth of the civilization that once thrived there.
Step-by-step explanation:
The statement that the Great Zimbabwe site has three different architectural groupings, each from a different period of time, is True. The site showcases a complex history through its diverse structures, each representing a snapshot in time of a civilization that once thrived in sub-Saharan Africa. The Hill Complex, believed to be the oldest, provided a space that could have been used for rituals, as a burial ground for chiefs, or even a royal palace. The Great Enclosure, dating from the 13th to 14th centuries, stands out with its remarkable dry stone walls. Additionally, the Valley Ruins located between these two structures indicate significant growth as the civilization flourished. All in all, these groupings cover around 1,700 acres and hint at a hierarchical society ruled by an elite class or central authority.