Your Son Nosa,who Is Age 5,is Able to Understand Some

Your son Nosa,who is age 5,is able to understand some aspects of conservation and classification,but does not quite understand seriation yet.Your partner claims that Nosa is developing earlier than Piaget's stages would predict,because he is already capable of concrete operations.You remember Piaget's opinion on this matter from your textbook,and you tell your partner that ___.

A) Nosa is a gifted child and should be placed in an advanced classroom
B) according to your textbook, because Nosa understands conservation and, he would be described by Piaget as a concrete operational thinker
C) Nosa has trouble with seriation because his fine motors kills are not well developed yet
D) Nosa may understand some concrete operational tasks, but according to Piaget, mastering all skills, including seriation, is necessary to qualify a child as a concrete operational thinker