Which of the following is NOT part of the leadership principles?

The principle of encouraging personal grievances is not included in the leadership principles because effective leadership focuses on fostering a positive and constructive environment rather than promoting grievances. The leadership principles emphasize understanding and addressing issues in a way that strengthens the team and builds morale. Instead of encouraging grievances, a leader should aim to create channels for open communication where concerns can be resolved constructively and where team cohesion is prioritized.

The other options reflect vital leadership principles. Prioritizing the welfare of Marines, being visible and approachable, and getting to know them are essential for building trust and fostering a supportive atmosphere, all of which contribute to effective leadership and team performance.