Although no blueprints of the pyramids have been found, what evidence suggests humans, not aliens, built the pyramids?

An ancient rock quarry is evidence that people extracted and prepared the stone used to build the pyramids. The quarry connects the construction to human labor and practical building methods. The other choices are not as direct: advanced technology is not evidence of who built the pyramids, and large work horses or wheeled carts are not established by the question as evidence.

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