Some Parents Frequently Expand,recast,or Otherwise Extend Their Children's Speech While

Multiple Choice

Some parents frequently expand,recast,or otherwise extend their children's speech while others rarely do so.What effect does the frequent use of expansions and recasts have on language acquisition?

A) no apparent effect on language acquisition
B) Inhibition of language acquisition
C) earlier acquisition of syntactic principles
D) facilitation of vocabulary acquisition, but not syntax