The principle that human development is adaptive means

A) it is coherent and organized.
B) it is aimed at dealing with internal and external conditions of existence.
C) development proceeds from simple to complex.
D) None of these

The principle that human development is adaptive means that it is aimed at dealing with internal and external conditions of existence, such as physical and social environments, and adapting to changes in those conditions. It is not necessarily coherent and organized, nor does it always proceed from simple to complex.