The parents of a 2-year-old child are ready to begin toilet training activities with him.

(A) Children experience impatience with soiled diapers when readiness for training is apparent. They often desire to be changed immediately. (B) A child must be able to use verbal or nonverbal skills to communicate needs. (C) A readiness indicator would be awaking dry from naps. (D) The age at which a sibling was toilet trained has no implications for training this child.