The diagram illustrates several stages in natural selection in wild rabbits. variation within the rabbit population $\rightarrow$ Z $\rightarrow$ reproduction by better adapted rabbits Which statement belongs in box Z?
- Acompetition between rabbits for limited resources
- Bpassing on of alleles to the next generation of young rabbits
- Cproduction of limited numbers of young rabbits
- Dselection by humans of rabbits with desirable characteristics