In the video, Chomsky argues that there is a "poverty of stimulus" (POS, i.e. insufficient and unsophisticated language input ,刺激贫乏论" ), what examples in U4A can prove his point?
A.
The example of her four-month-old son Robert (para. 4)
B.
The example of her middle child Nick (para. 11)
C.
The example of children of immigrants (para. 15)
D.
The example of children of parents who speak a pidgin (para. 16)
E.
The example of cryptophasia (para. 17)