Final answer:
The pyramid shape places most of the weight at the bottom, might reference a sacred stone, and was not originally designed by Pharaoh Khufu but rather evolved from earlier forms such as the step pyramid of Djoser.
Step-by-step explanation:
According to the passage, the shape of a pyramid places most of the weight at the bottom (Point I). This design was effective in stabilizing the massive structure of pyramids like King Khufu's Pyramid, which is the largest of the Giza Plateau pyramids. The shape also might have been based on a special stone (Point II), specifically the sacred ben-ben stone, which symbolized the primeval mound of initial creation. This reference links the pyramid's design to religious and creationist symbolism. Additionally, the step pyramid of Djoser was an early form of a pyramid, leading to the more familiar smooth-sided pyramid during Snefru's reign, suggesting that Khufu did not originally design the pyramid shape (Point III).