Answer:
What makes us human the most is our self-awareness and the ability of philosophical thought.
We understand we exist on Earth and wonder why the sky is blue, which is a trait no other species possesses.
Explanation:
Orangutans, chimpanzees, gorillas, bottlenose dolphins, elephants, orcas and bonobos all have self-awareness. But still don't wonder why the sky is blue.
Animals were seen capable of doing all the other factors.
