Stage Models of Development Are Based on All of the Following

Stage models of development are based on all of the following EXCEPT _____

A) In general, conquering each stage of development is a prerequisite for moving to the next
B) The models provide general understanding of development, but may not be quite as tidy as they appear on paper when applied to individuals
C) Understanding someone within the context of their current developmental stage is necessary to get a complete understanding of who they are
D) All developmental models end at adulthood, when primary development stops and people move from a regular growth trajectory to a much more diffuse approach that is unique to each person