Final answer:
The term for the family's tendency to maintain balance is homeostasis, which entails constant adjustments to maintain equilibrium in body functions within a certain range.
Step-by-step explanation:
The tendency of the family to try and maintain balance is called homeostasis. Homeostasis is the process by which constant adjustments to changes in the body occur, and an equilibrium is maintained by ensuring that body functions remain within a certain range. This is a critical mechanism in living organisms, not just in individual bodies but also in families and ecosystems, where a dynamic equilibrium is necessary to sustain the health and function of the system.