Most individuals develop a clear understanding of their language's structure, as well as a large vocabulary, during

A) the prenatal period.
B) childhood.
C) early adulthood.
D) late adulthood.

Language development occurs primarily during childhood, as this is the time when children learn the structure of their language and build their vocabulary through exposure to language from their environment. Prenatal language development is limited to hearing and recognizing sounds, while language development in early adulthood and late adulthood is typically focused on refining existing language skills rather than learning entirely new ones.