So far, some substitute for spoken human language has been taught to all but:

Name: So far, some substitute for spoken human language has been taught to all but:
Brand: Quizplus
Rating: 5.0 (68 reviews)

Question

Quizplus · Accepted Answer

Baboons have not been taught a substitute for spoken human language to the extent that chimpanzees, bonobos, and orangutans have. These other primates have been involved in studies using sign language, symbols, and other forms of communication to interact with humans.

So Far, Some Substitute for Spoken Human Language Has Been