What does charles darwin’s theory of natural selection state about traits? a. traits that increase the survival rate of a population are rarely passed on to future generations since they can affect reproduction. b. traits that prevent people from reproducing are passed on to future generations to ensure their survival. c. traits that make it more likely for a species to survive or reproduce become less common in a population over time. d. traits that provide a survival or reproductive advantage are more likely to be passed on to future generations.