The connection between religion and war in the Aztec Empire was primarily rooted in the belief that the gods required human sacrifices to ensure the continuation of the world and the favor of the deities. The most accurate response to explain this connection is:
The Aztecs believed they owed sacrifices to their gods, so they sometimes used war to gain captives for sacrifice.
This perspective highlights how religious beliefs directly influenced military actions and the justification for warfare within the Aztec society. War was often fought not just for territorial expansion but also to capture individuals for sacrificial offerings, which were seen as essential to appeasing the gods.