Answer:
All of the choices are correct
Explanation:
Darwin observed that members of a population produced more offsprings which competed for depleting resources among themselves. Genetic varieties among organisms caused some organisms to be better adapted to survive as compared to other organisms in a population. These organisms were favoured by natural selection and they were able to reproduce and pass on their characteristics to their offsprings. Â The organisms with better characteristics has more reproductive success as compared to other organisms of the species.