The answer to the question stated above is letter C.
Observation of tool-making among chimpanzees was revolutionary primarily because scientists believed <span>tool-making was a defining characteristic of humans.
>>>FACT<<<
>C</span>himpanzee mothers in <span>the Tai Forest, </span>instruct their children in tool use. Chimpanzee mothers assist them in placing the nut in the anvil in the proper way.
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Answer:
Metabolism (pronounced: meh-TAB-uh-liz-um) is the chemical reactions in the body's cells that change food into energy. ... Specific proteins in the body control the chemical reactions of metabolism.