The Nurse Selects the Family Systems Theory as a Guide

The nurse selects the family systems theory as a guide for providing care to a family. Which concept of this theory should the nurse use to maintain the stability of this family? Select all that apply.

A) The whole is more than the sum of its parts.
B) All parts of the system are interconnected.
C) Families develop and change over time.
D) Systems can be organized into subsystems.
E) There is a boundary between the system and the environment.