​Piaget Believed His Stages Were Distinct,and That a Child Made

Multiple Choice

​Piaget believed his stages were distinct,and that a child made a complete transition from one to another.Which observation argues against that position?

A) Children in other cultures go through different cognitive stages.
B) ​Children in other cultures go through the same stages but in a different order.
C) ​Children's cognitive development correlates with their social and emotional development.
D) ​Children's concepts seem to vary depending on task difficulty.