How did the ancient Egyptians haul over five million tons up hundreds of feet?

Perhaps they used systems of ramps, ropes, and plain, old-fashioned elbow grease, much like the systems they used to remove stones from their quarries. Maybe they used ramps that went straight up the sides or ramps that curved around the walls. There is no consensus. The real method remains a mystery.

According to Kara Cooney, a professor of Egyptian art and architecture, this is exactly what the ancient Egyptians wanted. It increases the sense of awe and wonder, proving the amazing power of the rulers who built them.

Which example from the text develops the idea that it remains a mystery as to how the Egyptians moved and stacked the stones they used to build the pyramids?

"Perhaps they used systems of ramps, ropes, and plain, old-fashioned elbow grease..."

"But the ancient Egyptians didn't use horses, and they certainly didn't have pickup trucks."

"A team from the French Institute for Oriental Archaeology discovered a unique ramp system..."

"The Great Pyramid weighed approximately 5,750,000 tons. A draft horse can pull four tons on its own..."