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Under normal conditions, a single AA NiCd battery will power a smoke detector

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Under normal conditions, a single AA NiCd battery will power a smoke detector for a minimum of 60 days. The current county regulation requiring all hospitals to replace the AA NiCd batteries in their smoke detectors every 45 days is both illogical and unduly harms the environment. The current replacement schedule could safely be extended to 60 days thereby decreasing the number of environment-damaging batteries requiring disposal.
 
Which of the following, if true, would most seriously weaken the above conclusion ?
 
A. The chemicals used in certain medical treatments can affect the operation of a smoke detector
B.Smoke detectors can normally operate on a single AA NiCd battery for longer than 60 days.
C.The county's hospital administrations would prefer to replace smoke detector batteries on a rotating schedule rather than in a single batch.
D.The results of a recent poll indicate that over half of the county's hospital administrators supported a change to the current replacement schedule.
E.Most homeowners replace their smoke detector batteries only four times per year.
Official Answer

2 Answers

Jsy Singh
1
Does not sound to be a very good question to me. but i would pick up a with the following reasoning.
Smoke detector life - 60 days
but replacement should happen in 45 days which is termed as useless.
Looking at the answers. None of the answers other than A come closely to speak about this issue. every other choice is useless.
answered Dec 19, 2014 by Senior Associate (437 points)
riyadamin
0

i think the answer should be D.
the conclusion made by the author here is "The current replacement schedule could safely be extended to 60 days thereby decreasing the number of environment-damaging batteries requiring disposal" which is supported by the 1st premise "Under normal conditions, a single AA NiCd battery will power a smoke detector for a minimum of 60 days."
But if that is true that "Smoke detectors can normally operate on a single AA NiCd battery for longer than 60 days" would seriously weakens the arguement since this arguement is dependent on the 1st premise mentioned earlier.


 

answered Dec 26, 2014 by Student (41 points)
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Jyotsna Mehta

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