What are common change management theories?

B is the correct choice as it includes well-established frameworks specifically focused on managing change within organizations. Kotter's Change Management Theory outlines an eight-step process for implementing successful change, emphasizing the importance of creating urgency, building a guiding coalition, and anchoring new approaches in the organization’s culture. Nudge Theory, on the other hand, focuses on subtly guiding individuals towards better decisions and behaviors through small changes in the environment. Together, these theories provide practical and strategic approaches to facilitate change effectively by understanding both the psychological and procedural elements involved in the change process.

While other options contain relevant theories, they do not primarily focus on change management. Behavioral Psychology and Situational Leadership might inform aspects of organizational behavior and leadership styles but do not constitute change management theories. Transactional Leadership and Conflict Resolution are more focused on leadership dynamics and dispute handling rather than systematic changes in organizations. Human Relations Theory and Structuralism deal primarily with organizational behavior and structure rather than strategies for managing change directly.