A Researcher Discovers That Men Who Play the Guitar Have

Multiple Choice

A researcher discovers that men who play the guitar have more offspring compared to others,and concludes that playing the guitar is evolutionarily adaptive.Among the objections one might make to this conclusion,which aspect (if any) of Darwin's principles of natural selection has NOT been shown?

A) Individuals within a population vary and are not identical.
B) Some of this variation is heritable.
C) Not all individuals are equally successful at reproducing.
D) None of the above.