Final answer:
Combat Operational Stress Control (COSC) refers to mental health support for military personnel.
Step-by-step explanation:
The answer to the question is option b) Mental health support for military personnel. Combat Operational Stress Control (COSC) refers to the strategies and interventions implemented to address the mental health and emotional well-being of military personnel during and after combat operations. It emphasizes the importance of providing support and assistance to individuals experiencing stress, trauma, and other psychological challenges in the military.