Final answer:
Symbolic Interactionism (C) is the sociological theory known for its micro-sociological perspective, focusing on individual interactions and the significance of symbols in communication.
Step-by-step explanation:
The theoretical approach in sociology that operates from a micro-sociological perspective and underscores the significance of symbols in individual interactions and communication is Symbolic Interactionism (C). Symbolic interactionism examines the relationships among individuals within a society and how these interactions contribute to the social world.
It focuses on the exchange of meaning through language and symbols, which are essential for people to understand their social realities. Individuals are seen as active participants who shape the social world rather than being passively affected by it. This theory takes a microanalytical view, looking at day-to-day interaction and how a shared understanding of symbols forms the basis of social construction.