25. A recent survey showed that 50 percent of people polled believe that elected officials should resign if indicted for a crime, whereas 35 percent believe that elected officials should resign only if they are convicted of a crime. Therefore, more people believe that elected officials should resign if indicted than believe that they should resign if convicted.
The reasoning above is flawed because it
(A) draws a conclusion about the population in general based only on a sample of that population
(B) confuses a sufficient condition with a required condition
(C) is based on an ambiguity of one of its terms
(D) draws a conclusion about a specific belief based on responses to queries about two different specific beliefs（B）
(E) contains premises that cannot all be true
请指教, 为什么这道题选B.
25. A recent survey showed that 50 percent of people polled believe that elected officials should resign if indicted for a crime, whereas 35 percent believe that elected officials should resign only if they are convicted of a crime. Therefore, more people believe that elected officials should resign if indicted than believe that they should resign if convicted.
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