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# The city performed its annual testing of lead levels in the drinking

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Re: The city performed its annual testing of lead levels in the drinking [#permalink]
Conclusion: it’s perfectly safe for the city’s residents to drink all the tap water they want.
Premise : the lead levels, even in the ones that exceeded federal standards, were still too low to pose any immediate health threat

There is a gap btwn the conclusion and premise. Immediate threat does not mean the water is safe.

(A) The city’s residents often disregard federal guidelines when it comes to public health issues because the standards are overly stringent.--Irrelevant or not necessary

(B) The most dangerous contaminant in drinking water is lead.-- Irrelevant

(C) Statistical sampling is not the most accurate basis for determining health threats even though the federal government and the city must depend on them. -- Incorrect, this is not necessary to conclude

(D) Lead levels even slightly above federal standards do not have long-term effects on people’s health. -- Correct

(E) People feel safer when they heed warnings from the federal government even if they are not entirely accurate. --Irrelevant
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Re: The city performed its annual testing of lead levels in the drinking [#permalink]
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Bunuel wrote:
The city performed its annual testing of lead levels in the drinking water and discovered that about 14 percent of the samples taken exceeded federal standards for allowable lead levels. Regardless of these findings, the lead levels, even in the ones that exceeded federal standards, were still too low to pose any immediate health threat. So, it’s perfectly safe for the city’s residents to drink all the tap water they want.

Which one of the following is an assumption on which the argument depends?

(A) The city’s residents often disregard federal guidelines when it comes to public health issues because the standards are overly stringent.

(B) The most dangerous contaminant in drinking water is lead.

(C) Statistical sampling is not the most accurate basis for determining health threats even though the federal government and the city must depend on them.

(D) Lead levels even slightly above federal standards do not have long-term effects on people’s health.

(E) People feel safer when they heed warnings from the federal government even if they are not entirely accurate.

OFFICIAL EXPLANATION

This is an Assumption question. For this first question you must find the assumption that the argument depends on in order to hold true.

The argument is about annual tests of the lead levels in drinking water. The conclusion is that the water is safe to drink, even though some samples
exceeded federal standards, because the levels were still too low to pose any risks.

STEP 3: Know what you’re looking for.
The correct answer will address the relationship between the federal standards and the amount of lead that causes health problems.

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Re: The city performed its annual testing of lead levels in the drinking [#permalink]
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Re: The city performed its annual testing of lead levels in the drinking [#permalink]
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