Why Do Adults Simplify the Vocabulary, Structure, and Length of Their

Multiple Choice

Why do adults simplify the vocabulary, structure, and length of their utterances when speaking to children?

A) so that their speech matches the level of the utterances produced by the child
B) so that their speech is just below the level of the utterances produced by the child
C) so that their speech is just above the level of the utterances produced by the child
D) so that their speech is characteristic of the order of the words in a child's utterances