In the 1960s, surveys of Florida`s alligator population indicated that the population was dwindling rapidly. Hunting alligators was banned. By the early 1990s, the alligator population had recovered, and restricted hunting was allowed. Over the course of the 1990s, reports of alligators appearing on golf courses and lawns increased dramatically. Therefore, in spite of whatever alligator hunting went on, the alligator population must have increased significantly over the decade of the 1990s.
Which of the following, if true, most seriously weakens the argument?
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AThe human population of Florida increased significantly during the 1990s
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BThe hunting restrictions applied to commercial as well as private hunters.
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CThe number of sightings of alligators in lakes and swamps increased greatly in Florida during the 1990s.
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DThroughout the 1990s, selling alligator products was more strictly regulated than hunting was.
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EMost of the sightings of alligators on golf courses and lawns in the 1990s occurred at times at which few people were present on those golf courses and lawns.
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正确答案: A