A proposed ordinance requires the installation in new homes of sprinklers automatically triggered by the presence of a fire. However, a home builder argued that because more than ninety percent of residential fires are extinguished by a household member, residential sprinklers would only marginally decrease property damage caused by residential fires.
Which of the following, if true, would most seriously weaken the home builder's argument?
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AMost individuals have no formal training in how to extinguish fires.
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BSince new homes are only a tiny percentage of available housing in the city, the new ordinance would be extremely narrow in scope.
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CThe installation of smoke detectors in new residences costs significantly less than the installation of sprinklers.
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DIn the city where the ordinance was proposed, the average time required by the fire department to respond to a fire was less than the national average.
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EThe largest proportion of property damage that results from residential fires is caused by fires that start when no household member is present.
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显示答案
正确答案: E