To what does the concept of a critical period for language acquisition refer?

A) the period of transition between one-word and two-word utterances
B) the time in one's childhood in which language must develop if it is to be fully learned
C) the period that isolated children spend by themselves before someone teaches them language
D) the period from 6 to 10 years of age during which certain complex aspects of syntax are learned

Critical Period

A critical period is a specific time during development when the brain is particularly receptive to acquiring certain skills or knowledge, such as language or vision.

Language Acquisition

The process by which humans learn to perceive, comprehend, and produce language, typically during early childhood.

Fully Learned

A state or condition in which all necessary knowledge or skills have been acquired to a level of complete mastery.