Concept:Social-psychological barriers are internal, subjective obstacles that distort communication. Time is an objective, external factor, not a psychological one.
Explanation:First, identify the three social-psychological barriers: Inference, Resistance to change, and Abstracting are all internal mental processes. They stem from personal biases, fears, or selective attention. For example, inference means drawing conclusions from incomplete data, resistance to change reflects unwillingness to accept new ideas, and abstracting involves focusing on only part of the information. These all hinder effective communication. Time, however, is a measurable, external constraint. It affects scheduling and resource allocation but does not arise from a person’s mindset or emotions. Therefore, time is not a social‑psychological barrier. It is a practical, objective factor.
Answer:Time (Option C)