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Tough CR , please explain (why or why not C)
by sim card - Sunday, 15 November 2009, 09:11 PM
  Every year many people become ill because of airborne mold spores in their homes. After someone becomes ill, specialists are often hired to eradicate the mold. These specialists look in damp areas of the house, since mold is almost always found in places where there is substantial moisture. If one wishes to avoid mold poisoning, then, one should make sure to keep all internal plumbing in good condition to prevent leakage that could serve as a breeding ground for mold.

Which of the following is an assumption on which the argument depends?
   Mold itself does not create moisture. 
   Most homeowners know enough about plumbing to determine whether  theirs is in good condition.
   Mold cannot grow in dry areas.
   No varieties of mold are harmless.
   Mold spores cannot be filtered from the air.
Re: Tough CR , please explain (why or why not C)
by Takahiro Minagawa - Monday, 16 November 2009, 01:05 AM
  Hi,

The argument here is
leakage=moisture is the cause of mold poisoning.

I think A is the right answer, because it strengthen the causal relationship indicated in the argument.

C is wrong because the passage says "mold is almost always found in places where is substantial moisture", implying that there is some exceptions.
Thus, If it says is "mold is always found", C could be the answer.

B is also close answer, but it doesn't have to be homeowners who are able to determine whether there is in good condition.

Taka
Re: Tough CR , please explain (why or why not C)
by sim card - Monday, 16 November 2009, 01:55 AM
 

thanks Taka,

yes A is the correct answer..