Answer: changes in structure
Explanation:
Pauline Boss describes stress that occurs in families when a member is added or subtracted as normative stress due to changes in structure. Families continuously change structure over time due to births or adoptions, deaths, and marriages and this can create a shifting reality of who belongs to the family or not.
While some families handle this change in structure well, others cannot cope and may spiral into dysfunction.
Your answer is Economy, the system of production and distribution and consumption of goods and services.