Final answer:
Interest in the physiological structures or behaviors that assist an organism in adapting to its environment is associated with the evolutionary perspective, based on evolution and natural selection principles.
Step-by-step explanation:
Interest in the role that physiological structures or behavior play in helping an organism adapt to its environment is characteristic of the evolutionary perspective. This approach is rooted in the principles of evolution and natural selection, assuming that behaviors, much like physical traits, can be shaped over time to benefit the survival and reproduction of a species. Evolutionary psychology looks at how universal patterns of behavior and cognitive processes have evolved, and how these adaptations increase the likelihood of gene perpetuation. Charles Darwin's work on natural selection and adaptation forms the historical underpinning of this perspective, which includes examining traits such as fear, and variations in cognition and behavior that benefit reproduction and survival.