Which of the following is an example of a structural functionalist theory?

Structural functionalism is a theoretical framework that views society as a complex system whose parts work together to promote solidarity and stability. In this context, systems theory aligns closely with structural functionalism as it also focuses on understanding how components of a system operate interdependently to maintain the overall functioning of the system.

Systems theory emphasizes the relationships and interactions between different entities within a system, exploring how these relationships contribute to the system's equilibrium and stability. This perspective is essential in macro social work practice, as it helps professionals understand the societal structures and functions that impact individuals and communities.

The other theories mentioned—social exchange theory, conflict theory, and symbolic interactionism—represent different approaches to understanding social behavior and organization. Social exchange theory emphasizes the costs and benefits of social interactions. Conflict theory centers on power dynamics, inequality, and social change, focusing on the struggles between different groups. Symbolic interactionism focuses on the meanings individuals derive from social interactions at a micro level. These approaches do not primarily emphasize the interdependence and functional contributions of societal structures as structural functionalism and systems theory do. Thus, systems theory is the example that best fits within the structural functionalist framework.