Final answer:
The language produced by an infant is called expressive language, and it results from both innate biological mechanisms and reinforcement through social interaction.
Step-by-step explanation:
The language that is produced by an infant is typically referred to as expressive language. This is the kind of language where babies use sounds, expressions, and later, words to communicate their needs and ideas before they can fully understand or produce adult-like speech. Expressive language emerges from an innate biological capacity, as proposed by Noam Chomsky with his concept of a Language Acquisition Device (LAD), but is also shaped through interaction with the linguistic environment, supporting the perspectives of both Chomsky and B.F. Skinner, who believed language learning is influenced by reinforcement.
Language development in infants is a remarkable process. Although it might seem like an arduous task, especially when compared to adult experiences of learning a new language, children acquire language easily and naturally. This natural acquisition is possible due to both biological predisposition and the social environment—a concept known as language socialization, where the process of learning language is deeply embedded within a social context and cultural practices.