None of the provided options accurately represent a valid comparison of the role of monumental architecture in the Aztec and Inca Empires. However, based on the context of the two civilizations, a proper comparison would highlight that both the Aztec and Inca used monumental architecture to signify their religious beliefs, but specific details about the number of gods worshipped or the architectural features mentioned in the options may not be accurate.
For a more accurate comparison:
- Aztec monumental architecture, such as the Templo Mayor, was primarily dedicated to their pantheon of gods, reflecting their polytheistic beliefs.
- Incan monumental architecture, such as Sacsayhuamán or the Temple of the Sun, did reflect their religious beliefs centered on the worship of the sun god, Inti, and the importance of ancestor worship in a more centralized worship of a limited number of deities.
If forced to choose from the given options, option one, while not entirely accurate, alludes to the different religious practices of the two empires:
"The Aztec and the Inca Empires’ monumental architecture both signified the influence of Tiawanaku religion; the Aztec worshipped two gods, whereas the Inca worshipped one god."
However, please note this statement conflates multiple elements and is not entirely correct. The influence of Tiawanaku specifically on the Aztecs is debatable, and the characterization of their deities is overly simplified.