In some early studies,researchers attempted to teach chimpanzees to speak.What conclusions led to these studies being discontinued

A) The reinforcement contingencies used in these studies were highly stressful for chimpanzees.
B) Chimpanzees lack the necessary vocal equipment to produce human speech sounds.
C) Chimpanzees lack the cognitive capacity to understand and produce language.
D) Humans are the only species capable of conscious communication.

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Casey Terzich · Accepted Answer

Final Answer : B, Explanation :  Researchers found that despite extensive training, chimpanzees were unable to produce the complex range of sounds needed for human speech. This led to the conclusion that chimpanzees lack the necessary vocal equipment for human-like speech production.

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