Final answer:
The Department of Veterans Affairs (VA) provides a civilian resource option to relieve or augment Prime BEEF forces.
Step-by-step explanation:
The agency that provides a civilian resource option to relieve or augment Prime BEEF forces is the Department of Veterans Affairs (VA). The VA plays a crucial role in the reintegration of combat veterans into civilian life, offering various programs and support services to assist them in their transition. These efforts are aimed at helping veterans adjust to civilian life and overcome challenges they may face after their military service.