[Solved] F which of the following is glucose most critical as an energy source? A) Muscles B) Brain C) Liver D) Heart Sexual Development: The process by which individuals attain physical and psychological characteristics related to sexuality, including puberty and sexual orientation. Hormones: null Observations: The act of noticing or perceiving something and registering it as being significant, often used in research and studies for data collection. Pornographic Magazines: Printed publications containing images and texts intended to stimulate erotic feelings rather than convey art or education.