What distinguished Kanzi and Mulika from other chimpanzees used in earlier studies was that Kanzi and Mulika:
A) used only symbols to make requests.
B) received larger reinforcements.
C) were unable to communicate with natural chimpanzee sounds.
D) occasionally used symbols to relate events of the past.

Question

Quizplus · Accepted Answer

Kanzi and Mulika were able to use symbols to relate events of the past, which distinguished them from other chimpanzees used in earlier studies.

What Distinguished Kanzi and Mulika from Other Chimpanzees Used in Earlier