Final answer:
Advanced irrigation systems are not a common characteristic of prehistoric ritual sites, as they are associated with more developed civilizations like the Indus Valley Civilization, rather than earlier prehistoric settlements.
Step-by-step explanation:
The characteristic which is NOT a commonly shared feature of prehistoric ritual sites is d. Advanced irrigation systems. Prehistoric ritual sites, such as those from the Neolithic period, often have features like a centralized location, monumental architecture, and an alignment with celestial events to mark significant times of the year for agricultural purposes.
Structures related to more advanced urban planning, like advanced irrigation systems, tend to be associated with later, more developed civilizations.
For instance, the Indus Valley Civilization, which dates to a period later than early prehistoric settlements, had highly sophisticated urban planning and water management systems. However, these irrigation systems are not a characteristic of prehistoric ritual sites.
The characteristic that is NOT commonly shared by prehistoric ritual sites is d. Advanced irrigation systems. Prehistoric ritual sites commonly have a centralized location, monumental architecture, and alignment with celestial events.