The Rate at Which Children Pass Through the Various Stages

The rate at which children pass through the various stages of language development

A) is slower in children of deaf parents, when the children have only periodic contact with speaking people.
B) is faster in advanced countries than in third-world countries.
C) is accelerated when parents expose their children to as much language as possible.
D) is largely dependent on maturation and is about the same in cultures around the world.