[問題] CR問題

[htbk (小小艾佛森)]

People rarely recognize the fact that being

underweight is as dangerous to health as being overweight.

But the death rate for individuals who are ten percent underweight,

like that for those thirty percent overweight, is almost twice what it

is for individuals of normal weight.



The dangers of being underweight supported by the statistic above appear

less serious if which of the following is true?

(A) Many of the underweight persons studied had lost weight as a result of

    illness or disease.

(B) Conception of underweight and overweight varied widely among those

    studied.

答案是A，

不過我覺得答案A怎麼好像在支持原文，不像反駁....

有請各位幫我開竅一下這一題的邏輯

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推 flac:這是因果關係題 A的說明把原本的因果關係弄倒
→ flac:體重過輕--->danger變成 danger(illness)--->體重過輕
→ flac:要不要補一下其他三個選項?
→ htbk:其他3個很明顯錯
→ htbk:所以我只PO答案比較可以選的選項
推 ddqiii:原文說過輕跟過重一樣危險
→ ddqiii:A說但其實不是因為過輕危險,是因為疾病所以導致過輕
→ ddqiii:也就是另有它因的答案