Explanation
C: Copper was the first metal used by humans.
Copper has been used by humans for over 10,000 years and was the first metal to be used by early humans because of its properties such as malleability, ductility, and conductivity. Copper was used by early humans for making tools, weapons, and household objects such as pots, pans, and utensils. The discovery of copper marked a significant advancement in human civilization as it allowed for the development of more advanced tools and technologies. The widespread use of copper paved the way for the Bronze Age, where copper was alloyed with tin to produce bronze, a stronger and more durable metal. The Bronze Age lasted from about 3000 BCE to 1200 BCE and saw the emergence of more advanced civilizations in many parts of the world.
