When is it appropriate to use recovery procedures for a vehicle?

The correct choice highlights that recovery procedures should be implemented when a vehicle is immobilized or damaged. This is because recovery operations are specifically designed to address situations where a vehicle cannot safely or effectively continue its mission due to mechanical failure, off-road conditions, or damage sustained during operations.

In these scenarios, following established recovery procedures ensures that recovery personnel can safely retrieve or assist the vehicle without causing additional hazards or risks. It helps to prevent further damage to the vehicle and ensures the safety of personnel involved in the recovery operation.

While other situations, like an accident, a fire, or feelings of unsafety may warrant certain actions, they do not specifically underscore the technical and procedural requirements of vehicle recovery. Recovery procedures are focused on the technical aspects of dealing with immobilization and damage rather than broader safety concerns or situational emergencies.