Which one of the following phenomena supports Darwin's concept of natural selction in organic evolution?

Which one of the following phenomena supports Darwin's concept of natural selection in organic evolution?

Which one of the following phenomena supports Darwin's concept of natural selection in organic evolution?

Which one of the following phenomena supports Darwin's concept of nautral selection in organic evolution ?

Which one support Darwin's concept of natural selection?

Which of the following is not under Darwin's theory of natural selection ?