Question ID:PT41 S3 Q1 Passage:The water of Lake Laberge, in Canada, currently contains high levels of the pesticide toxaphene. Authorities are puzzled because toxaphene was banned in North America in the early 1980s and now is used only in a few other parts of the world. Stem:Which one of the following, if true, does most to explain why the water of Lake Laberge currently contains high levels of toxaphene? Correct Answer Choice:AChoice A:Levels of pesticides in the environment often continue to be high for decades after their use ends. Choice B:Lake Laberge's water contains high levels of other pesticides besides toxaphene. Choice C:Toxic chemicals usually do not travel large distances in the atmosphere. Choice D:North American manufacturers opposed banning toxaphene. Choice E:Toxic chemicals become more readily detectable once they enter organisms the size of fish.