As a Diligent Parent,John Has Read Many Books on Child

Multiple Choice

As a diligent parent,John has read many books on child development.One idea that he found especially fascinating was the zone of proximal development.How could he determine the lower limit of his daughter's zone of proximal development concerning the letters of the alphabet?

A) determine her current stage of Piagetian development
B) record how many letters she can correctly identify on her own
C) record how many letters she can correctly identify after intensive adult assistance
D) give her a short-term memory task unrelated to letters of the alphabet