When a removable partial denture is terminally seated, the retentive clasp tips should:

When a removable partial denture is terminally seated, the retentive clasp tips should exert no force. This is because the primary function of the retentive clasps once the prosthesis is fully seated is to provide stability and retention without causing stress on the abutment teeth. At the moment of complete seating, the clasps should not be actively pulling or applying any force as this could lead to discomfort or harmful torque on the supporting teeth.

In contrast, other choices involve actions or states that contradict the intended function of the clasps. If the clasps applied retentive force into the body of the teeth, it could result in unwanted pressure and potential damage to the tooth structure. Making the clasps invisible may provide an aesthetic benefit, but it does not address the mechanics of how they should behave when the denture is seated. Furthermore, resisting torque through the long axis of the teeth is important, but if the clasps are exerting force at the time of seating, it could lead to misalignment and increase stress on the teeth. Thus, the correct understanding is that the clasps should not be engaged with retention forces during this phase of seating.