Why Do Some Researchers Believe Chimpanzees Have Not Mastered True

Multiple Choice

Why do some researchers believe chimpanzees have not mastered true human language?

A) Apes lack the physical ability to speak;they lack mental ability.
B) Apes can only mimic language;they do not make sense.
C) Apes use language to get rewards;they only communicate with humans.
D) Apes do not understand syntax;they do not use language spontaneously.