Final answer:
Freud describes the fear of losing genital organs as a part of the Castration Complex. This fear, known as castration anxiety, arises during the phallic stage of psychosexual development in boys.
Step-by-step explanation:
In the context of Freud's theory of psychosexual development, a part of the Castration Complex is best described as C. Fear of losing genital organs. During the phallic stage, which occurs roughly between the ages of 3 and 6, children begin to discover their bodies and recognize gender differences. In boys, this stage brings about the Oedipus complex, where the child feels desire for the opposite-sex parent and rivalry towards the same-sex parent. A component of this complex for boys involves castration anxiety, where they fear punishment for their desires, specifically fearing that this punishment might involve losing their genital organs. A successful resolution of this complex involves the child identifying with the same-sex parent.