The statements that reflect Sumerian religious beliefs are:
- The Sumerians believed in many gods.
- The Sumerians believed that it was their responsibility to keep the gods happy.
- The Sumerians believed that the gods were powerful and unpredictable.
The statement "The Sumerians believed that the gods wanted the Sumerians to be happy" is generally not accurate; rather, the Sumerians believed in maintaining the favor of the gods through proper worship and rituals.