No occupation should be subject to a licensing requirement unless incompetence in the performance of tasks normally carried out within that occupation poses a plausible threat to human health or safety. The principle stated above, if valid, most helps to justify the reasoning in which one of the following arguments? ['Because some of the duties that police officers carry out have no connection to human health or safety, police officers should not be subject to a licensing requirement.', 'Because there are no realistic circumstances in which poor work by an interior designer poses a danger to human beings, interior designers should not be subject to a licensing requirement.', 'Because hospital administrators routinely make decisions that affect the health of hundreds of people, hospital administrators should be subject to a licensing requirement.', 'Because hair stylists regularly use substances that can pose a threat to human health if handled improperly, hair stylists should be subject to a licensing requirement.']