What two corps are shared between the Marine Corps and the Coast Guard?

The correct answer indicates that both the Marine Corps and the Coast Guard share the Medical and Chaplain Corps. These two specialized groups are essential components in both branches for maintaining the health and well-being of their personnel. The Medical Corps provides crucial healthcare services, offering medical support, treatment, and preventive care for service members. Similarly, the Chaplain Corps provides spiritual support, counseling, and guidance, regardless of a service member's faith. This shared structure allows for a unified approach to addressing the psychological and physical needs of members in both services, which ultimately contributes to the overall readiness and morale of the forces.

Other options may mention logistical or intelligence functions, but these tend to be more specific to each branch's operational roles or missions rather than shared categories that serve direct personal wellbeing, like medical and chaplaincy services do.