Mandy Seldom Corrects Her 4-Year-Old's Grammatical Errors,such as "Her Drinked

Multiple Choice

Mandy seldom corrects her 4-year-old's grammatical errors,such as "Her drinked my milk." However,she is careful to correct factual errors,such as "Tiger ate his milk." If Mandy's child develops normal language skills,which theory is weakened by this evidence

A)  the nativist view of language development 
B)  the behavioural view of language development 
C)  all major theories of language development 
D)  the transformational theory of language development