Which of the following scenarios makes the conversion of a tourniquet inadvisable?

The correct choice highlights that the conversion of a tourniquet is inadvisable when tactical or medical considerations are not met. This emphasizes the importance of the context in which a tourniquet is applied. For example, if the environment is still hostile, or if the casualty's condition fluctuates due to medical factors, maintaining the tourniquet until those conditions improve is crucial.

Medical considerations can include the risk of continued bleeding or the need for careful monitoring of the patient's status. The risk of converting the tourniquet prematurely without ensuring that stabilization has occurred can lead to severe complications, including the resurgence of hemorrhage, which could jeopardize the casualty's life.

Other scenarios provided, such as the casualty being stable, responsive, or having the tourniquet on for a certain duration, do not inherently impact the decision to convert the tourniquet. The key takeaway is that situational awareness and appropriate medical judgment dictate whether a tourniquet should remain in place or be converted.