Answer: Correct answer is natural selection.
The process that drives to Darwin theory of evolution may be a natural action. Darwin theory is said as biological evolution that was developed by charles darwin which states that every one sorts of species of organisms are familiar to develop and arise through natural action.
Those little natural picks are either heritable variations that increase the flexibility of a private so as to breed, survive, and to contend.
In Darwin theory, he enclosed transmutation of species idea of evolution