The correct answer is D. religious festivals.
Explanation:
1. Maya cities served as important religious centers where various ceremonies and rituals took place.
2. Religious festivals were significant events in the Maya culture, and these cities provided the infrastructure and space for such gatherings.
3. Temples, pyramids, and other structures in Maya cities were often built for religious purposes and served as focal points for ceremonies and worship.
4. The religious significance of these cities played a crucial role in the daily life and beliefs of the Maya civilization.