[Solved] The functional unit of the kidney is known as the A) Bowman capsule. B) glomerulus. C) nephron. D) distal tubule. Elderly Women: Female individuals of advanced age, typically considered to be those who are 65 years old or older. Sexually Explicit Films: Movies that display sexual content, including sexual acts, nudity, and erotic themes, intended for adult audiences. College: An institution of higher learning that offers undergraduate and potentially graduate degrees in various fields. Formal Operational Thinking: A stage in Jean Piaget's theory of cognitive development where individuals develop the ability to think about abstract concepts and logically test hypotheses.