Multiple Choice
Why did researchers switch from trying to get chimpanzees to speak language to sign language?
A) Chimpanzees already exhibited a gestural form of communication.
B) Chimpanzees lacked a larynx,making them unable to produce the same range of sounds as humans.
C) Sign language had a preset grammar that was easy to understand.
D) All of the above
Correct Answer:

Verified
Correct Answer:
Verified
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