According to Johnson's conceptual model of nursing which of the following does a nurse examine to determine the existence of a problem?

A) Information to the degree the behavior is purposeful, orderly, and predictable
B) Past and present family and patient behavioral system histories
C) Information on structural components of a subsystem
D) All of the above

Conceptual Model

An abstract representation that organizes and illustrates the key concepts and the relationships among them within a field of study.

Structural Components

Fundamental parts or aspects that form the basis or framework of a system, building, or organism.

Behavioral System

A framework for understanding individual behavior as a complex system of responses to both internal and external stimuli.