Bunuel
Altir, a coloring agent used in soft drinks, has the potential to cause vision problems in humans. However, to consume a quantity of Altir sufficient to cause vision problems, a person would need to drink four liters of an Altir-containing drink every day for over 70 years. Clearly, soft drinks that contain Altir are safe for human consumption.
Which of the following is an assumption upon which the argument above depends?
Premise:- Altir is used in soft drinks to add color to them. It has potential to cause vision problems in humans. Consuming at least 4 ltrs of such drinks everyday for 70 years will cause vision problems.
Conclusion:- Such drinks are safe for human consumption.
Jump in argument:- From vision problems in humans to safe for human consumption. Therefore, we need an option which informs us that Altir if consumed in the stated quantity will not cause any other health issues.
Or, it can give any other linkage between vision problems and safe for human consumption.
Since this is an assumption question, if our conclusion falls by negating an option then that option will be our answer choice because an assumption to an argument is its core requirement.Quote:
A. The amount of Altir present in soft drinks is not greater than the amount of some other potentially harmful substances present in soft drinks.
Negation- The amount of Altir present in soft drinks
is greater than the amount of some other potentially harmful substances present in soft drinks
Affect on Conclusion- Potentially harmful to whom ? Also, this argument is completely based on Altir and its potential to cause vision problems. By comparing Altir with other harmful substances we might add addition information to this argument but it doesn't fulfil the requirement of an assumption.
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B. Most people who drink soft drinks are aware that Altir can cause vision problems.
Negation- Most people who drink soft drinks are NOT aware that Altir can cause vision problems.
Affect on Conclusion- Awareness is not our issue here. Even if people are not aware of Altir and its complications, they still might not drink soft drinks. We do not have any relation between awareness and consumption of soft drinks in this argument.
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C. A requirement that every bottle of a drink that contains Altir mention the presence of Altir on its label will not result in any improvement in human health.
Negation- A requirement that every bottle of a drink that contains Altir mention the presence of Altir on its label
will result in improvement in human health
Affect on Conclusion- This is again not informing us how Altir, which is causing vision problems in human, is completely safe for human consumption. Negation of C, gives us additional reasoning as to how labelling will improve human health, but this improvement is to what extent? Has the health of humans improved by 1% or 100%, we are not aware of this.
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D. No other coloring agents are less harmful to humans than Altir is.
Negation- Some coloring agents are less harmful to humans than Altir is
Affect on Conclusion- Scope issue. We have no knowledge where these coloring agents are used; they could be used in soft drinks, but they could also be used in other foods.
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E. Altir will not when consumed in quantities much smaller than needed to cause vision problems cause any other health problems in humans.
Negation- Altir
will when consumed in quantities much smaller than needed to cause vision problems cause any other health problems in humans
Affect on Conclusion- "Consumed in quantities much smaller than needed to cause vision problems"---> Key information.
Why key information? Because quantity beyond the mentioned amount already means that there could be a risk for vision problems in humans.
If negation is true, then Altir will cause other health problems. Hence, soft drinks that contain Altir are not safe for human consumption. Our conclusion has fallen.
Option E should be our OA.