Freud's theory of psychosexual stages of development consists of five stages, each associated with a different focus of libido (sexual energy):
1. C. Oral stage: This is the first stage, occurring from birth to around 18 months, where the focus of pleasure is on the mouth (sucking, biting).
2. A. Anal stage: This stage occurs from about 18 months to 3 years and focuses on control and pleasure derived from bowel and bladder elimination.
3. E. Phallic stage: This stage occurs between 3 and 6 years, where the focus of pleasure is on the genitals and children develop an attachment to the opposite-sex parent (Oedipus complex).
4. D. Latency stage: This stage occurs from around 6 years to puberty, where sexual impulses are dormant, and the focus shifts to developing cognitive and social skills.
5. B. Genital stage: This stage begins at puberty and continues into adulthood, where sexual interests mature and are directed towards others.
Thus, the correct order is **C, A, E, D, B**.