Final answer:
The Psychosexual Theory developed by Sigmund Freud focuses on childhood development and its influence on personality; it consists of five stages of Psychosexual Development: oral, phallic, latency, and genital.
Step-by-step explanation:
The subject of this question is Psychology. The Psychosexual Theory developed by Sigmund Freud is a psychological theory that focuses on childhood development and how it influences personality and behavior in adulthood. Freud proposed that individuals go through a series of stages during childhood, and if they do not receive proper nurturing and parenting during a stage, they may become fixated in that stage. The five stages of Psychosexual Development are oral, phallic, latency, and genital.