On a Continuum of Internal to External Influences on Development

Multiple Choice

On a continuum of internal to external influences on development, physical development lies on the internal end of the continuum, whereas social development lies on the external end. This implies that

A) physical development is not influenced by external forces, nor is social development influenced by internal forces.
B) physical development will occur normally with minimal environmental support, whereas social development requires strong environmental support.
C) physical and social development do not influence each other.
D) physical development cannot be changed by external forces, whereas social development can.
E) development must take place under carefully controlled conditions.