Because Apes Seem Able to Learn a Version of American

Multiple Choice

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

A) Chimpanzees do not sign accurately enough to prove that they can acquire language.
B) Chimpanzees do not produce novel sequences of signs.
C) Chimpanzees may only be imitating the gestures of trainers.
D) Chimpanzees do not have the fine motor control to fully execute ASL.