loved this questions!
premise: current techs do a lot, but the cost sometimes is not reasonable verusus improvement
conclusion: it is reasonable to set standarts involving risks of present and future
B fits perfectly. To be sure, let's negate it: there are no effective ways to take into account all of the relevant risks posed by allowing different levels of contaminants. This does break the argument, fits!
premise: current techs do a lot, but the cost sometimes is not reasonable verusus improvement
conclusion: it is reasonable to set standarts involving risks of present and future
B fits perfectly. To be sure, let's negate it: there are no effective ways to take into account all of the relevant risks posed by allowing different levels of contaminants. This does break the argument, fits!







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