Q6 - Lourdes: Dietary fiber is an important

[weiyichen1986]

Dear member,

I chose D in this question, i am so wondering why it is wrong?

Can you explain it to me why A not D?

[ManhattanPrepLSAT2]

We're asked what would undermine, or go against, Kyra's recommendation.

Her recommendation is that the public should be told to cut back on fiber intake.

Why?

Because having a lot more fiber than is recommended daily has a negative impact.

Here's an analogous situation. Imagine you were going to buy a new car, and you tell a friend about it. You just say: "I'm going to buy a new car." Your friend reacts "It's crazy to spend over $80,000 on a car! You should definitely spend less money than you are thinking of spending."

What would your reaction be? For me, I'd think - Hey, who said I was going to overspend like that? I'm not going to spend 80,000, and your reasoning doesn't apply to me.

Kyra is basically doing the same thing your friend did -- she's saying because taking way too much fiber has bad consequences, people should cut down on the amount of fiber they take in. In making her point, she's making a big assumption about how much fiber people take in in the first place.

(A) exposes this gap in her reasoning.

(D) does not have a direct impact on the point she makes-- that one should cut back on fiber-- and we have to speculate a bit if we want to try to make it undermine the suggestion.

Is that helpful? Please follow up if you have further questions and happy studying!

[ltownsjr]

I thought the answer was (B) because I thought the argument was assuming that fiber interfered with calcium, and therefore if you could find a answer that says the level of fiber is reduced then you could weaken it.

[Mab6q]

I thought the answer was (B) because I thought the argument was assuming that fiber interfered with calcium, and therefore if you could find a answer that says the level of fiber is reduced then you could weaken it.

Would simply would need to make a number of assumptions to make B look reasonable. Don't try to justify why an answer choice which is out of scope is correct by bringing outside information in. Food being processed simply has nothing to do with the argument.