体内不产生P450物质的人与产生P450物质的人比较，前者患帕金森式综合症(一种影响脑部的疾病)的可能性三倍于后者，因为P450物质可保护脑部组织不受有毒化学物质的侵害。因此，有毒化学物质可能导致帕金森式综合症。
下列哪项如果为真，将最有力地支持以上论证?( )
【专题 GMAT逻辑题】
The number of applications for teachingpositions in Newtown’s public schools was 5.7 percent lower in 1993 than in 1985and 5.9 percent lower in 1994 than in 1985. despite a steadily growing student populationand an increasing number of teacher resignations, however, Newtown does not facea shortage in the late 1990’s. Which ofthe following, if true, would contribute most to an explanation of the apparentdiscrepancy above?
【A】Many of Newtown’s public school studentsdo not graduate from high school
【B】New housing developments planned for Newtownare (shared) for occupancy in 1987 and are expected to increase the number of elementaryschool students in Newtown’s public
【C】The Newtown school board does notcontemplate increasing the ratio of students to teachers in the 1990’s.
【D】Teachers’ colleges in and near Newtownproduced lower graduates in 1994 than in 1993
【E】In 1993 Newtown’s public schools received 40percent more applications for teaching positions than there were positions available
科学家对76位心脏病患者进行了研究，他们分别采用“一名志愿者带一只狗前去探望病人”、“一名志愿者前去探望病人”以及“没有志愿者”三种方法分别测试这些病人的反应。结果发现第一种情况下病人的焦虑程度下降了24%，第二种情况下病人的焦虑程度只下降了10%，第三种情况下病人的焦虑程度仍保持原来水平，因此科学家认为，狗能帮助心脏病人降低焦虑情绪。
下面哪一项最能削弱科学家的论点?
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