Darwin was influenced by many other scientists including the economist Malthus, who studied population size. Based on Malthus’ research, what did Darwin infer about why natural selection is a result of overpopulation? (Overpopulation: Too many animals)

a. When there was overpopulation, there were too many different species in one area.

b. When there was overpopulation, there was more food than is needed by a population.

c. When there was overpopulation, there were too few organisms to enable all to survive.

d. When there was overpopulation, there were more offspring than the environment could support.