Final answer:
Mesopotamian priests made sacrifices to please their gods and avoid disasters, as they believed these deities would otherwise wreak havoc on their society.
Step-by-step explanation:
Mesopotamian priests spent a significant amount of time making sacrifices to their gods primarily B) To please the gods and avoid disasters. The Mesopotamians had a view of their gods as easily angered, and they believed these gods would bring calamities such as floods, plagues, or famines if displeased. Priests played a crucial role in soothing the gods through sacrifices and rituals, thereby attempting to maintain order and prosperity in their society. In addition to sacrifices, Mesopotamian religious practices also encompassed divination and what might be termed magical practices, aiming to understand and influence the universe.