Final answer:
The correct answer is option D. The Inca were organized to achieve complex projects.
Step-by-step explanation:
The architecture of Machu Picchu offers invaluable insights into Inca society and their capabilities. The construction of Machu Picchu without the use of mortar, using polished stone fitted perfectly together, reveals the Inca's advanced architectural techniques and their profound knowledge of stone masonry. This work was achieved by the strength of human labor, showcasing the complex organization required to undertake and complete such monumental projects.
In addition, Machu Picchu's function as a ceremonial city and royal retreat for the Inca ruler Pachacuti Yupanqui, as well as housing for the priesthood, suggests that Inca society was deeply religious, with a social hierarchy revolving around the emperor and religious elites.
The city's remote location, architectural design, and alignment with natural surroundings, along with its terraced fields on the steep slopes, further emphasize the Inca's ability to adapt and transform their environment in harmony with their religious and cultural beliefs.
Lastly, the presence of a royal fort, the Temple of the Sun, and spaces for the mummification of the aristocracy indicate that Machu Picchu was intimately associated with the Inca's religious practices, their veneration of the sun god, and the preservation of their elite class. Overall, the architectural splendor and historical importance of Machu Picchu provide a window into the Inca's religious, social, and technological sophistication.