Which of the following stresses should leaders address proactively?

Leaders should proactively address behavioral changes among Marines because such changes can be indicative of deeper issues, including stress, morale, or personal difficulties. Monitoring and responding to these changes is crucial in a leadership role, as they can affect unit cohesion, mission readiness, and overall morale. Early intervention can help to mitigate potential problems that might escalate if left unaddressed.

While physical fitness levels, completion of paperwork, and success in training exercises are important aspects of military operations, they do not directly signal the emotional or psychological state of the Marines. In contrast, behavioral changes often reflect underlying issues that could impair performance and well-being, thus making it vital for leaders to stay attuned to these signs and provide support where needed. Addressing behavioral changes demonstrates leadership that is attuned to the well-being of the team, fostering a positive and supportive environment.