Final answer:
Archaeologists have proposed theories about Machu Picchu's purpose as a ceremonial center and royal retreat, but there's no definitive conclusion on its exact purpose, making the statement false.
Step-by-step explanation:
The statement in question is false. Archaeologists have developed theories about the function of Machu Picchu, proposing it served as a religious ceremonial center and housed the priesthood, and later a royal retreat for the Inca ruler Pachacuti Yupanqui.
However, given that the exact purpose of Machu Picchu still has elements of mystery and continued debate among scholars, it is not accurate to claim that archaeologists have finally determined its definitive purpose.
The architectural beauty of Machu Picchu is recognized as a World Heritage Site by UNESCO, and its impressive construction technique, using large polished stones fitted together without mortar, signifies its historical importance.
The site's remote location and skilled stone construction suggest significant planning and dedication to its construction and use.
Despite Hiram Bingham's discovery in 1911, the underlying intentions behind Machu Picchu's creation and abandonment continue to intrigue and invite ongoing investigation by archaeologists and historians alike.