Question ID:PT57 S3 Q12 Passage:Editorial:  To qualify as an effective law, as opposed to merely an impressive declaration, a command must be backed up by an effective enforcement mechanism. That is why societies have police. The power of the police to enforce a society's laws makes those laws effective. But there is currently no international police force. Hence, what is called "international law" is not effective law. Stem:Which one of the following is an assumption required by the editorial's argument? Correct Answer Choice:EChoice A:No one obeys a command unless mechanisms exist to compel obedience. Choice B:If an international police force were established, then so-called international law would become effective law. Choice C:The only difference between international law and the law of an individual society is the former's lack of an effective enforcement mechanism. Choice D:The primary purpose of a police force is to enforce the laws of the society. Choice E:Only an international police force could effectively enforce international law.