While applying the ecological systems model, the _____ is a special subset of an action system that includes the practitioners and formal service systems involved in work on the target problems.​

A) ​closed system
B) ​client system
C) ​open system
D) ​agency system

Ecological Systems Model

A framework that categorizes the complex social environments and their impact on individuals through different, interacting layers from immediate surroundings to broader societal influences.

Client System

A term used in social work and other fields to describe the individual, family, group, or community that is the focus of professional intervention.

Formal Service Systems

Organized, structured systems designed to provide social, health, or educational services to individuals or communities.