Any museum that owns the rare stamp that features an airplane printed upside down should not display it. Ultraviolet light causes red ink to fade, and a substantial portion of the stamp is red. If the stamp is displayed, it will be damaged. It should be kept safely locked away, even though this will deny the public the chance to see it. The reasoning above most closely conforms to which one of the following principles? ['A museum piece that would be damaged by display should not be displayed.', 'Museum display cases should protect their contents from damage caused by ultraviolet light.', 'The primary purpose of a museum is to educate the public.', 'The public should judge the quality of a museum by the rarity of the objects in its collection.']