Like Mesopotamia and China, Many Early Civilizations Came to Rely

Like Mesopotamia and China, many early civilizations came to rely on metallurgy. Aside from metallurgy, a peculiar skill that set the early civilizations of Peru's Andes apart was

A) the skill of using natural fibers to create an astonishing system of suspension bridges across deep mountain gorges.
B) the ability to achieve similar metallurgical results without ever discovering smelting, the high-temperature process by which pure metal is produced from ore.
C) writing, which originated in this part of the world and not in Sumer, as was previously believed.
D) trigonometry and advanced astronomy.
E) corpse embalming.