Answer:
Organic Material
Explanation:
Carbon Dating is the process in which the age of a piece of organic matter is determined by the proportions of carbon isotopes it contains.
It would be.. sand, slit, clay.
Among all the choices given (copper, clay, plastic, and glass), only copper is metal. By being metallic, copper is then able to conduct heat well more than the other materials. This makes it more suitable for the the new equipment composition. Thus, the answer to this item is letter "D. Copper is conductive and will absorb heat to cook the food."
That means it is the first ingredient added