Which stage occurs from 0 to 18 months and involves sucking, biting, and chewing?

• A. Oral
• B. Anal
• C. Phallic
• D. Latent

Answer: (A)

Freud's first psychosexual stage centers on the mouth, with pleasure tied to feeding and oral exploration. From birth through about 18 months, the infant derives satisfaction through sucking, biting, and chewing, and the process of weaning marks the transition out of this stage. This timeframe and these behaviors match the description in the question. If fixation occurred at this stage, it might later show up as oral habits like smoking, overeating, or nail-biting, though many individuals move through it without lasting issues. The other stages involve different focus areas and ages: toilet training and control of bowels in the anal stage; genitals and related conflicts in the phallic stage; and a quieter period with less erogenous focus in the latent stage.