[Solved] In a fixed-interval 60-second schedule,the delivery of a reinforcer A)depends only on the passage of time B)occurs only if the subject responds rapidly C)requires at least one response D)always occurs precisely 60 seconds after the last reinforcer 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.