[Solved] The twin method assumes that: A)all people in a particular population share similar environments. B)the environments experienced by identical twins are no more similar to each other than are the environments experienced by fraternal twins. C)twins are not treated differently from ordinary siblings. D)parents treat all their children alike. Mature and Affluent: Describes individuals or demographics that are both financially well-off and have reached a stage of emotional and mental development. Natural Selection: A process in evolutionary biology where organisms better adapted to their environment tend to survive and produce more offspring, driving evolutionary change. Erotic Plasticity: The degree to which an individual's sex drive can be changed by cultural, social, and situational factors. Reproductive Potential: The biological capability of an individual or species to produce offspring, contributing to the genetic diversity of a population.