Which is a distinctive trait of human beings?

Human brains have the capacity to make rational decisions.
Human parents tend to conceive and bear one child at a time.
Humans have learned how to use objects they find as tools.
Humans are the largest species of omnivores.

Question

Which is a distinctive trait of human beings?
 	
	Human brains have the capacity to make rational decisions.
	Human parents tend to conceive and bear one child at a time.
	Humans have learned how to use objects they find as tools.
	Humans are the largest species of omnivores.

math&ing001 · Answer

Human brains have the capacity to make rational decisions seems the most logical to me.

vera_ewing · Answer

@math&ing001 thanks so much! :)

math&ing001 · Answer

Welcome =)