Final answer:
Personality is primarily determined in the first five years of life according to Freud's theory of psychosexual stages.
Step-by-step explanation:
The question seeks to understand at what stage the human personality is determined, as per the topographical concept of the mind that includes the conscious, preconscious, and unconscious mind. According to Sigmund Freud, the personality develops through a series of psychosexual stages during early childhood, and how we resolve conflicts in these stages influences our adult personality traits. The correct answer is that personality is primarily determined in the first five years of life (C).