Final answer:
The core assumption of Family Systems Theory is that the family is an interconnected system where changes in one member affect the entire family, viewing each member's actions as influential to the group's dynamics.
Step-by-step explanation:
The core assumption of Family Systems Theory is c) Views the family as an interconnected system where changes in one member affect the entire family. This perspective considers the family unit as a complex social system where each member's actions influence the entire group's dynamics. In line with functionalist and interactionist paradigms, families are seen as groups in which people form strong emotional connections and fulfill various roles that contribute to the function and stability of the society. Within the framework of Family Systems Theory, each family member's role is interconnected, and shifts in one member's behavior or experience can have ramifications for all other members, altering the family's overall structure and functioning.