Because Chimpanzees Seem Able to Learn a Version of American

Multiple Choice

Because chimpanzees seem able to learn a version of American Sign Language, some researchers have concluded that chimps are able to acquire language. Those who disagree, however, offer which criticism of this conclusion?

A) Sign language is simply not a language.
B) Chimpanzees do not produce novel sequences of signs.
C) Chimpanzees are only imitating the gestures of trainers.
D) Both b and c