Final answer:
Structural Functionalism is the theoretical approach in sociology that focuses on the behavior of social groups and looks at society as a well-balanced system with interconnected parts.
Step-by-step explanation:
The theoretical approach in sociology that is characterized by a macro-sociological perspective and focuses on the behavior of social groups rather than individuals is Structural Functionalism. This approach looks at society as a well-balanced system with interconnected parts that function together to maintain social stability. It examines the roles and functions of different social institutions and how they contribute to the overall functioning of society.