The graph below shows the changes in the number of individuals in a population who have a specific trait. Which statement concerning this trait is a valid inference? A) Individuals can acquire new survival characteristics over time and pass them on to their offspring. B) The number of traits a species possesses has a direct relationship to the amount of time the species will exist. C) The longer a species is in an environment, the less likely it is that mutations will occur within the species. D) As time passed, an increasing number of individuals with this trait survived and reproduced.