Question ID:PT35 S1 Q5 Passage:Proponent:  Irradiation of food by gamma rays would keep it from spoiling before it reaches the consumer in food stores.  The process leaves no radiation behind, and vitamin losses are comparable to those that occur in cooking, so there is no reason to reject irradiation on the grounds of nutrition or safety.  Indeed, it kills harmful Salmonella bacteria, which in contaminated poultry have caused serious illness to consumers.Opponent:  The irradiation process has no effect on the bacteria that cause botulism, a very serious form of food poisoning, while those that cause bad odors that would warn consumers of botulism are killed.  Moreover, Salmonella and the bacteria that cause botulism can easily be killed in poultry by using a safe chemical dip. Stem:The opponent's argument proceeds by Correct Answer Choice:EChoice A:isolating an ambiguity in a crucial term in the proponent's argument Choice B:showing that claims made in the proponent's argument result in a self-contradiction Choice C:establishing that undesirable consequences result from the adoption of either one of two proposed remedies Choice D:shifting perspective from safety with respect to consumers to safety with respect to producers Choice E:pointing out an alternative way of obtaining an advantage claimed by the proponent without risking a particular disadvantage