Final answer:
The correct answer is A. purification and filth, representing the duality of domains in the responsibilities of Aztec gods and goddesses.
Step-by-step explanation:
The Aztec pantheon included gods and goddesses each responsible for domain(s) within the natural world, with a common theme of duality represented by their areas of influence. The correct answer to the question, which pair of "domains" was the responsibility of one Aztec god or goddess that represents this theme of duality, is A. purification and filth.
This reflects the complex relationship and balance between opposing forces that was a key aspect of Aztec metaphysical thought and religious beliefs. Other significant deities in the Aztec pantheon included Tlaloc, the god of rain and fertility, and Quetzalcoatl, the feathered serpent god of wind and knowledge among other things.