[Solved] What does the flatness problem state? A) that the universe is one-dimensional B) that the density of the universe is much greater than the critical density C) that the universe is two-dimensional D) that the density of the universe is very close to the critical density Pornographic Magazines: Printed publications that contain content of an explicitly sexual nature intended to stimulate erotic excitement. Formal Operational Stage: The stage of cognitive development, according to Piaget, occurring from approximately age 12 onwards, where individuals develop the ability to think abstractly, logically, and systematically. Intuitionist Stage: A cognitive phase where individuals rely more on intuitive thinking rather than rational, empirical evidence. Role Confusion: A situation in which an individual is unsure about the expectations and behaviors associated with a particular social role or identity.