People Argue That the Wild Boy of Aveyron Never Developed

Multiple Choice

People argue that the Wild Boy of Aveyron never developed complete, efficient language skills even after years of intensive therapy because he had lived in total social isolation for years before he was found. The theory underlying this reasoning would support the statement that

A) language acquisition is only biologically based.
B) language acquisition is only through the child's own exploration and discovery.
C) language acquisition is vitally dependent on appropriate social environments.
D) there is no critical period for language learning.