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06 May 2020, 21:34
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
89% (01:34) correct
11%
(01:46)
wrong
based on 389
sessions
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An anthropologist hypothesized that a certain medicinal powder contained a significant amount of the deadly toxin T. When the test she performed for the presence of toxin T was negative, the anthropologist did not report the results. A chemist who nevertheless learned about the test results charged the anthropologist with fraud. The anthropologist, however, countered that those results were invalid because the powder had inadvertently been test in acidic solution.
Which one of the following, if true, most strengthens the anthropologist’s counterargument?
(A) The anthropologist had evidence from fieldwork that the medicinal powder was typically prepared using toxin T.
(B) The activity level of toxin T tends to decline if the powder is stored for a long time.
(C) When it is put into an acidic solution, toxin T becomes undetectable.
(D) A fresh batch of powder for a repeat analysis was available at the time of the test.
(E) The type of analysis used was insensitive to very small amounts of toxin T.
06 May 2020, 22:36
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Quote:
*The word is powder, not power.
Anthropologist speculated a toxic compound T in a medicinal powder.
When the test results were negative, she did not report them and gave an explanation that the results were flawed because the samples were tested in an acidic solution.
Prethinking - "But what evidence do we have that tests in acidic solution produce invalid results. Let's see if we can find something which can answer this"
Option A- This doesn't strengthen the counterargument.
Option B- We do not know for how long it was stored.
Option C- This is what we are looking for
Option D- May be she can perform the tests again on the fresh batch and not mess up this time.
Option E- At first this looks correct too. But I think we can safely assume that the anthropologist is concerned only about the "significant amount of the deadly toxin T."
IMO Option C is correct. I am sure there is a better reason to eliminate E.
07 May 2020, 08:33
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Quote:
argument
=x hyp that an mp had toxin t
=when she tested t wasn't present
=she didn report the results
=a chemist found and charged her x fraud
=x told that t wasn't found bc of ac solution
str x
ans (C) when t was in ac, it was undetectable, this explains y she didnt rept results
