Early explanations of language development rested heavily on the roles of modeling and reinforcement in learning language. which one of the following children's utterances casts doubt on the idea that modeling and reinforcement are sufficient to explain how children acquire language?

The answer is "No do dat no more!"

Explanation:

Although modeling, reinforcement, and feedback almost cer-tainly play some role in language development, early theoriesbased on such processes could not adequately account for thefact that most children acquire a very complex language sys-tem  in  a  very  short  period,  and  with  only  limited  guidancefrom adults.