Final answer:
Language development in infants occurs in stages, starting before birth and progressing to the production of single words. This process is universal across cultures.
Step-by-step explanation:
Language development in infants occurs in several stages. The first stage begins before birth, as babies show a preference for their mother's voice and can discriminate between languages. After birth, babies communicate through gestures before they start speaking. They then enter the babbling stage, where they produce repeated syllables. Finally, they progress to producing single words. This language development process occurs universally in all cultures, although the timing may vary.