C) The baby has grown up
Explanation:
In the poem the mother sees Jesus through the face of her infant. She sings lullaby to the baby and compares his innocence with the cruel world. She is crying because one day the baby will grow up and won't need her protection but she feels sad as she always wants to protect the child.
Since the child's innocence is compared with Jesus and the mother with Marry. The beautiful bond of a mother child relationship is explained by William Blake.
Informal language is often a conversational tone, because most people don't speak formally when talking to a friend or acquaintance.
Kimmy thought she had one-fourth of the money that the other student did, but she was wrong.
