Question

what is the name of the book that darwin published about his theory?
the evolution of the human species
the origin of the species by natural selection
the origin of life on earth

Explanation:

Charles Darwin published "On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life", often abbreviated as "The Origin of the Species by Natural Selection". It introduced his theory of evolution by natural - selection.

Answer:

The Origin of the Species by Natural Selection