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Virulent microbes, which are transmitted mainly through drinking

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Virulent microbes, which are transmitted mainly through drinking  [#permalink]

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New post 09 Sep 2018, 08:07
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  35% (medium)

Question Stats:

74% (01:36) correct 26% (01:36) wrong based on 43 sessions

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Virulent microbes, which are transmitted mainly through drinking water, are the most common cause of waterborne diseases. According to the World Health Organization, such diseases cause almost two million deaths every year, and an estimated 65 percent of these fatalities are caused by microbial organisms. Clearly, this number can be significantly reduced if drinking water is treated with anti-microbial agents before it is supplied to consumers.

Which of the following would it be most useful to establish in order to evaluate the conclusion drawn above?

A. Whether treating drinking water with anti-microbial agents would be more expensive than treating it with conventional water purification processes

B. Whether the fatalities caused by waterborne diseases would be reduced if alternative forms of medical treatment were used

C. Whether the figures reported by the World Health Organization include the number of deaths caused by allergic reactions to medicines prescribed for the treatment of waterborne diseases

D. Whether drinking water is contaminated at water processing plants or while being delivered to consumers

E. Whether drinking water contains any harmful contaminants other than disease-causing microbes

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Re: Virulent microbes, which are transmitted mainly through drinking  [#permalink]

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New post 09 Sep 2018, 08:19
PeepalTree wrote:
Virulent microbes, which are transmitted mainly through drinking water, are the most common cause of waterborne diseases. According to the World Health Organization, such diseases cause almost two million deaths every year, and an estimated 65 percent of these fatalities are caused by microbial organisms. Clearly, this number can be significantly reduced if drinking water is treated with anti-microbial agents before it is supplied to consumers.

Which of the following would it be most useful to establish in order to evaluate the conclusion drawn above?

A. Whether treating drinking water with anti-microbial agents would be more expensive than treating it with conventional water purification processes

B. Whether the fatalities caused by waterborne diseases would be reduced if alternative forms of medical treatment were used

C. Whether the figures reported by the World Health Organization include the number of deaths caused by allergic reactions to medicines prescribed for the treatment of waterborne diseases

D. Whether drinking water is contaminated at water processing plants or while being delivered to consumers

E. Whether drinking water contains any harmful contaminants other than disease-causing microbes


+1 for D

A. Whether treating drinking water with anti-microbial agents would be more expensive than treating it with conventional water purification processes
- Incorrect. The expense of treating the drinking water is irrelevant

B. Whether the fatalities caused by waterborne diseases would be reduced if alternative forms of medical treatment were used
- Incorrect. Reduced? Reduced by how much. This is inconsistent

C. Whether the figures reported by the World Health Organization include the number of deaths caused by allergic reactions to medicines prescribed for the treatment of waterborne diseases
- Incorrect. The number of deaths caused by allergic reactions to medicines wouldn't help in evaluating the conclusion. This is irrelevant

D. Whether drinking water is contaminated at water processing plants or while being delivered to consumers
- Correct. This is important to evaluate because if the drinking water is contaminated while delivering to customers then there is no use of treating the water before it is supplied to customers.

E. Whether drinking water contains any harmful contaminants other than disease-causing microbes
- Incorrect. This is irrelevant
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Re: Virulent microbes, which are transmitted mainly through drinking  [#permalink]

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New post 09 Sep 2018, 08:30
Conclusion - Clearly, this number can be significantly reduced if drinking water is treated with anti-microbial agents before it is supplied to consumers.
Question type- Evaluate a Plan.

A. Whether treating drinking water with anti-microbial agents would be more expensive than treating it with conventional water purification processes - Irrelevant.

B. Whether the fatalities caused by waterborne diseases would be reduced if alternative forms of medical treatment were used - Irrelevant. Alternative forms of treatment are out of scope.

C. Whether the figures reported by the World Health Organization include the number of deaths caused by allergic reactions to medicines prescribed for the treatment of waterborne diseases - Irrelevant.

D. Whether drinking water is contaminated at water processing plants or while being delivered to consumers - This is important to know, since if it is contaminated while processing or while distribution, the plan will not be beneficial. CORRECT.

E. Whether drinking water contains any harmful contaminants other than disease-causing microbes - Irrelevant.

Answer D.
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Re: Virulent microbes, which are transmitted mainly through drinking &nbs [#permalink] 09 Sep 2018, 08:30
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