Dan Slobin Has Defined a Set of Operating Principles That

Dan Slobin has defined a set of operating principles that together constitute children's language-making capacity. These principles are

A) more difficult for adults to acquire than they are for children to acquire.
B) more difficult for children to acquire than they are for adults to acquire.
C) written in simplified form, so that children can easily understand them.
D) in the form of directives to the child.