Which of the Following Is a Reason for the Improvements

Which of the following is a reason for the improvements in writing that occur as children mature?

A) As children mature,they gain more knowledge about the world but also become increasingly stubborn and therefore tend to have less to tell others in their writing.
B) Adolescents use a knowledge-telling strategy and young children use a knowledge-transforming strategy when writing.
C) Younger children need to concentrate less on the mechanical requirements (e.g. ,printing,spelling,punctuation) than do olderchildren.
D) As children develop,they have greater skill in revising and editing their writing.