Fresh Start

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Priyank Bahuguna: Newbie | Next Rank: 10 Posts; Posts: 2; Joined: Sun Feb 19, 2012 11:12 pm

by Priyank Bahuguna » Tue Feb 21, 2012 5:42 am

Advertisement: According to a recent research study, daily use of Fresh Start, a new
toothpaste, reduces the risk of developing dental cavities by over 20 percent. In
addition, as a result of a new formula, the use of Fresh Start results in whiter,
healthier-looking teeth. Clearly, Fresh Start not only gives your teeth a beautiful
look but also provides the most reliable protection against dental cavities.
Which of the following is an assumption in the argument above?
(A) No other toothpaste provides more reliable protection against dental cavities.
(B) Fresh Start's formula does a better job of whitening teeth than do competitors'
formulas. .
(C) People are just as interested in having beautiful teeth as they are in having
healthy teeth.
(0) Fresh Start also prevents other dental disorders, such as gingivitis.
(E) Reliable protection against dental cavities, combined with excellent aesthetic
properties, is likely to make Fresh Start a popular toothpaste on the market.

OA :-A

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Source: Beat The GMAT — Critical Reasoning | Tue Feb 21, 2012 5:42 am

killer1387: Legendary Member; Posts: 581; Joined: Sun Apr 03, 2011 7:53 amFollowed by: 5 members; Thanked: 52 times

by killer1387 » Tue Feb 21, 2012 8:54 am

daily use of Fresh Start-->
1)reduces the risk of developing dental cavities by over 20 percent
2)whiter,healthier-looking teeth.

Conclusion--> Fresh Start not only gives your teeth a beautiful look but also provides the most reliable protection against dental cavities.

Assumption is the link between

reduces the risk of developing dental cavities by over 20 percent ,& provides the most reliable protection against dental cavities.

Hence A.

pemdas: Legendary Member; Posts: 1084; Joined: Fri Apr 15, 2011 2:33 pmFollowed by: 21 members; Thanked: 158 times

by pemdas » Tue Feb 21, 2012 1:18 pm

This question is an example of causal fallacy. The assumption required to serve as premise here must be the one which is Necessary. All other alike assumptions may be Sufficient, but we look mainly for Necessary assumption. The useful tool for such arguable conditions is negation test or its likelihood.

Assumption Necessary: If A causes B, then without A, B is not possible
Assumption Sufficient: If A causes B, then it's likely for B to be caused by something else besides A or B still can occur if A is not factored.

choice a) indicates assumption Necessary.
B=Clearly, Fresh Start ...but also provides the most reliable protection against dental cavities.
A=No other toothpaste provides more reliable protection against dental cavities.

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