Q5 - Cigarette companies claim that

[tzyc]

I was not sure between (A) and (B). First chose (A) and then switched to (B)
I thought maybe (B) is correct because if those smokers who replaced high nicotine with low nicotine cigarretes, they do not feel satisfied with low nicotine amount and smoke more than those who smoke high nicotine cigarretes, then in the end their nicotine levels may become the same...Or is this answer wrong because those use low nicotine cigarretes does not need to be satisfied with high nicotine level so they do not necessarily smoke a lot...
Or is this wrong because even they smoke more amount, it may not end in the same nicotine level?

Thank you

[sumukh09]

B doesn't help explain the findings in the study because we don't know what affect smoking more of the lowest nicotine cigarettes has on the nicotine level of those smokers. Also this answer choice says the smokers smoke the "lowest" nicotine cigarettes but what about those that smoke lower nicotine cigarettes but not necessarily the "lowest?" This would still not explain the findings in the study that after a pack a day, smokers have the same nicotine levels regardless of whether they smoked high or low nicotine cigarettes.

A) on the other hand is exactly what we need to resolve the paradox as it says our blood can only absorb a maximum level of nicotine as found in the "lowest" nicotine cigarettes available. If people smoke a pack a day of the lowest nicotine cigarettes available then their nicotine level would be no higher or lower than those that smoke a pack of cigarettes with higher levels of nicotine since there's only so much nicotine our blood can sustain.

[maryadkins]

I thought maybe (B) is correct because if those smokers who replaced high nicotine with low nicotine cigarretes, they do not feel satisfied with low nicotine amount and smoke more than those who smoke high nicotine cigarretes, then in the end their nicotine levels may become the same...

The argument tells us how much they smoke: one pack per day. That's true for everyone. So we can't compare numbers because the numbers match for all the smokers.

(C) doesn't help explain why the levels are the same. It just means whatever they're ingesting is getting in their blood.

(D) tar has nothing to do with anything in the question.

(E) okay, but why are the levels the same?