Southington University's fund-raisers succeeded in getting donations from 80 percent of the potential donors they contacted this year. This rate would be the expected rate if the only potential donors contacted were those who have donated in the past. But good fund-raisers constantly contact less likely prospects in an effort to expand the donor base. Thus the high success rate, far from showing that the fund-raisers did a good job, shows insufficient canvassing effort.
Which of the following, if true, most seriously weakens the argument?
Among potential donors contacted by Southington University's fund-raisers, the majority of those who did not make donations were people who had made donations to the university in the past.
The amount of money raised by Southington University's fundraisers this year was lower than the amount they had raised in any of the previous several years.
Individual donations made to Southington University this year were, on average, slightly larger than were average individual donations made to many other universities.
Fund-raisers contacting past donors are not only to get new donations but also to get names of potential new donors to contact.
The majority of the donations that fund-raisers succeeded in getting for Southington University were from donors who had never given to the university before.
fund-raisers成功得从今年联系过的80%的人那里拿到捐款。这么高的成功率只可能是所有联系过的人都是以前捐过钱的人才有可能。但是好的fund-raisers会去联系更不可能捐钱的人
所以这个成功率代表了fund-raisers其实不够努力。问weaken
choice e, 大部分fund-raisers募集到的钱都是从那些从没捐过钱的人那里得到的。correct
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