【单选题】At one time it was the most important city in the region—a bustling commercial center known for its massive monuments, its crowded streets and commercial districts, and its cultural and religious inst...
A.
Teotihuacan, once the home of 200,000 people, was the center of a large empire.
B.
Teotihuacan, once a major metropolitan area, was destroyed by an invasion.
C.
A still unsolved mystery is why the people of Teotihuacan suddenly abandoned their city.
D.
Many archaeologists are fascinated by the ruins of a pre-Columbian city called Teotihuacan.