David, 15 years of age, has trouble in all his language subjects. Based on the sensitivity period, this is because he did not get proper exposure to human language from birth to ________.

Question

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The critical period for language acquisition is generally considered to be from birth to around 12 years of age. During this time, the brain is particularly receptive to learning language, and lack of exposure can lead to difficulties in language acquisition later in life.

David, 15 Years of Age, Has Trouble in All His