(1) First used on a wide scale in 1970, narcotic detector dogs save countless staff hours in locating narcotics in vehicles, mail, unaccompanied baggage, and on cargo ships. A dog and its handler can check 500 packages in 30 minutes; it would take a mail examiner several days to inspect as many. At border ports, a dog can inspect a vehicle in about two minutes; the same search by a CBP Officer would take at least 20 minutes. Therefore, the use of narcotic detector dogs has greatly enhanced the fight against illegal drug smuggling into the United States.(2) While not exactly high-tech, a unique tool in CBP?s drug fight is its force of narcotic detector dogs, their trainers, and the CBP Officers who work with these canine detectors.(3) This fight continues today, extending into the high-tech world of the 21st Century. Through diligence, close inspection, sophisticated technology, and the sacrifice of lives, CBP has given an excellent account of itself in fighting the flow of illegal drugs into this country.(4) Since the repeal of Prohibition in 1933, liquor smuggling has naturally decreased. In later years, however, the illegal entry of narcotics and dangerous drugs increased to threatening proportions. During the 1960s, „70s, and „80s, Federal Officers faced the almost overwhelming task of fighting the influx of opium, heroin, cocaine, hashish, marijuana, and amphetamines into the United States.
Explanation
Answer: A - The most logical order of the passages is 4, 3, 2, 1. It is not logical to begin the passages with paragraphs 2 or 3, as indicated in Responses B and C, because they appear to complete information that has been presented earlier and, therefore, depend on information in the other two paragraphs in order to be understood. This also eliminates Response D. This leaves Response A, which begins with paragraph 4. The paragraphs presented in this order form a well-organized, coherent passage.
