GWD-8-29 哪位亲能帮助解答下呀~~谢谢啦

lovepunch

GWD-10/8-Q29：GWD-2-14
Smithtown
University’s fund-raisers succeeded in getting donations from 80 percent of the potential donors they contacted.This success rate, exceptionally high for university fund-raisers, does not indicate that they were doing a good job.On the contrary, since the people most likely to donate are those who have donated in the past, good fund-raisers constantly try less-likely prospects in an effort to expand the donor base.The high success rate shows insufficient canvassing effort.
Which of the following, if true, provides more support for the argument?
A.Smithtown University’s fund-raisers were successful in their contacts with potential donors who had never given before about as frequently as were fund-raisers for other universities in their contacts with such people.
B.This year the average size of the donations to Smithtown University from new donors when the university’s fund-raisers had contacted was larger than the average size of donations from donors who had given to the university before.
C.This year most of the donations that came to Smithtown University from people who had previously donated to it were made without the university’s fund-raisers having made any contact with the donors.
D.The majority of the donations that fund-raisers succeeded in getting for Smithtown University this year were from donors who had never given to the university before.
E.More than half of the money raised by Smithtown University’s fund-raisers came from donors who had never previously donated to the university.

答案是A
good fund-raisers constantly try less-likely prospects in an effort to expand the donor base（这句没懂什么意思，难道是“好的拉款人不太可能扩大捐款基础。”？）
Q:还是不懂A对在哪？什么叫做和其他学校拉到以前未捐过款人的成功率一样就加强了？

哪位亲能解答一下呀~谢谢啦

kikisunflower

原文结论：those fund-raisers' canvassing effort is insufficient

用X表示从来没有捐过款的。

A：S大学联系X并成功筹款的频率=其他大学联系X并成功筹款的频率
    看得出他们并没有更sufficient，否则“=”该换成“>”了

good fund-raisers constantly try less-likely prospects in an effort to expand the donor base

不知道怎么准确翻译，我觉得意思就是说，即使是good fund-raiser在扩展base的时候，也并不怎么指望能在这些新donor身上挖到钱。言下之意就是，要扩base是很有难度的。那么是否能在新donor身上挖到钱，才能真正体现canvassing effort efficiency。

而A就比较了S大学和其他大学在挖新donor的钱的时候，效率如何，正确。