A Parent Is Concerned That Her Child Is Unable to Sit

Multiple Choice

A parent is concerned that her child is unable to sit alone.The nurse explains that development is based on in-born timetables and the child will be most likely able to meet this milestone at a specific time.Upon which theory did the nurse base the response to the client?

A) Havighurst's theory
B) Task theory
C) Psychosocial theory
D) Maturational theory