According to Kotter's eight-step model, which action is crucial for building momentum?

Forming a powerful coalition is a fundamental step in Kotter's eight-step model for leading change because it emphasizes the importance of establishing a strong group of leaders and stakeholders who are committed to the change effort. This coalition is instrumental in building momentum for several reasons.

Firstly, a powerful coalition brings together diverse perspectives, skills, and resources, which can help in effectively addressing resistance and fostering support across the organization. Members of this coalition can champion the change initiative, influencing others and helping to create a sense of urgency around the need for change.

Secondly, such a coalition helps to legitimize the effort. It signals to the wider organization that this is a priority and that it has backing from key figures, making it more likely for others to get on board.

Finally, as the coalition works to drive the change forward, its collective efforts help to sustain momentum by ensuring that there is continuous engagement and communication about the change process. This ongoing support is crucial as it transforms initial enthusiasm into a sustained commitment to change.

While the other options may contribute to a change initiative in a more limited context, they do not specifically address the importance of collective influence and commitment, which is vital for building the necessary momentum.