The Prenatal Period of Development Is Important to Developmental Theorists

The prenatal period of development is important to developmental theorists because:

A) they now understand the mechanisms by which the undifferentiated cells of the zygote first become the blastocyst and then the multitude of cells present at birth.
B) it serves as a model for development during all subsequent periods.
C) it has helped prove that epigenesis is a faulty explanation for mechanisms that drive developmental change.
D) the rate of growth during the period of prenatal development predicts later physical development.