Great apes are able to learn the Sign Language and use it to communicate complex thoughts to humans.

Question

Quizplus · Accepted Answer

While great apes can learn some sign language and use it to communicate basic needs or desires, there is limited evidence that they can use it to express complex thoughts like humans do. Their use of sign language is generally more about simple requests or responses rather than complex conversation.

Great Apes Are Able to Learn the Sign Language and Use