求助 OG39 评价题的真正思路和逻辑

托福要考一百一

The growing popularity of computer-based activities was widely expected to result in a decline in television
viewing, since it had been assumed that people lack suffi cient free time to maintain current television-viewing
levels while spending increasing amounts of free time on the computer. That assumption, however, is evidently
false: In a recent mail survey concerning media use, a very large majority of respondents who report increasing
time spent per week using computers report no change in time spent watching television.
Which of the following would it be most useful to determine in order to evaluate the argument?
(A) Whether a large majority of the survey respondents reported watching television regularly
(B) Whether the amount of time spent watching television is declining among people who report that they
rarely or never use computers
(C) Whether the type of television programs a person watches tends to change as the amount of time spent
per week using computers increases
(D) Whether a large majority of the computer owners in the survey reported spending increasing amounts of
time per week using computers
(E) Whether the survey respondents’ reports of time spent using computers included time spent using
computers at work (answerE)

这道题前后讨论的范围有差异，所以很明显应该选E
可是我想了半天也不明白其中的逻辑，E是怎么影响到这个argument的

首先原文说是因为电脑的普及才导致收看电视的下降，因此人们就假设业余时间里人们看电视的时间少了而用电脑的时间增加了，接着的survey是用来反对假设的，我认为survey想说明的是虽然用电脑的时间长了，但是这并没有影响到人们看电视的时间，因此主要反对的是假设里面说的人们看电视的时间少了，而不是针对用电脑的时间增加而产生的反对
答案关注的是人们用电脑的时间，让我觉得有点confuse，即使survey里面的人指的是工作室用电脑的时间增加了，那又如何评价argument的正确与否呢？想弄明白其中的逻辑

跪求各位NN指正

2013notlate

头像相当cute.
本人逻辑小菜。
问的是评价survey,那么就是说survey对不对，有没有用。
题目焦点是说的free time， 如你所说
但假设survey所获得computer 使用时间包括工作时间，不是完全在free time的，那很显然这个survey是不对的，对考量整个free time的电脑，电视使用是没有意义的。

小皮球PAL

看了这么多解释这道题目的回答，就觉得你这个我可以接受，明白了