Which One of the Following Statements Best Illustrates a Neo-Piagetian

Which one of the following statements best illustrates a neo-Piagetian approach to cognitive development?

A) Rather than involving general stages of increasingly advanced reasoning processes, children's cognitive development may involve discrete stages in particular content domains.
B) Children's progression through various stages of cognitive development is almost entirely the result of environmental experiences; brain maturation has little to do with their advancements in thinking.
C) Children's progression through various stages of cognitive development is almost entirely the result of brain maturation; environmental experiences have little to do with their advancements in thinking.
D) Children's acquisition of various cognitive abilities occurs in a gradual, trendlike manner rather than in discrete stages.