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# Using new detection techniques, researchers have found

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Using new detection techniques, researchers have found [#permalink]

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29 Oct 2012, 03:03
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Hello All,

I'm looking at this question:

-------------
Which of the following most logically completes the argument?

Using new detection techniques, researchers have found trace amounts of various medicinal substances in lakes and rivers. Taken in large quantities, these substances could have serious health effects, but they are present in quantities far too low to cause any physiological response in people who drink the water or bathe in it. Nevertheless, medical experts contend that eliminating these trace amounts from the water will have public health benefits, since ____________.

(A)

some of the medicinal substances found in lakes and rivers are harmless to humans in large quantities

(B)

some of the medicinal substances found in lakes and rivers can counteract possible harmful effects of other such substances found there

(C)

people who develop undesirable side effects when being treated with medicines that contain these substances generally have their treatment changed

(D)

most medicinal substances that reach lakes or rivers rapidly break down into harmless substances

(E)

disease-causing bacteria exposed to low concentrations of certain medicinal substances can become resistant to them

We are essentially looking for an answer that favours the removal of such medicinal substances.

I saw (C) and (E) as such examples. However, why would E be considered a stronger choice than C?

Thanks for all your help.

Best Greetings.
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Re: Using new detection techniques, researchers have found [#permalink]

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29 Oct 2012, 03:09
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The argument only speaks about the effects of the medicine present in the water. Option C speaks about the medicines used when treating patients. Hence it is completely out of scope. It only creates an illusion of staying close to the argument by using similar words.

E speaks directly about low concentrations of the medicine. The argument says that the medicine found in the water supply is of low concentration. So E stays close to the argument. Hence E is the right answer.

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Re: Using new detection techniques, researchers have found [#permalink]

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11 Dec 2015, 16:30
elegan wrote:
Hello All,

I'm looking at this question:

-------------
Which of the following most logically completes the argument?

Using new detection techniques, researchers have found trace amounts of various medicinal substances in lakes and rivers. Taken in large quantities, these substances could have serious health effects, but they are present in quantities far too low to cause any physiological response in people who drink the water or bathe in it. Nevertheless, medical experts contend that eliminating these trace amounts from the water will have public health benefits, since ____________.

(A)

some of the medicinal substances found in lakes and rivers are harmless to humans in large quantities

(B)

some of the medicinal substances found in lakes and rivers can counteract possible harmful effects of other such substances found there

(C)

people who develop undesirable side effects when being treated with medicines that contain these substances generally have their treatment changed

(D)

most medicinal substances that reach lakes or rivers rapidly break down into harmless substances

(E)

disease-causing bacteria exposed to low concentrations of certain medicinal substances can become resistant to them

We are essentially looking for an answer that favours the removal of such medicinal substances.

I saw (C) and (E) as such examples. However, why would E be considered a stronger choice than C?

Thanks for all your help.

Best Greetings.

C is wrong. If people have their treatment changed, then there is no need of removing the traces.
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Re: Using new detection techniques, researchers have found [#permalink]

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24 Apr 2016, 11:01
elegan wrote:
Hello All,

I'm looking at this question:

-------------
Which of the following most logically completes the argument?

Using new detection techniques, researchers have found trace amounts of various medicinal substances in lakes and rivers. Taken in large quantities, these substances could have serious health effects, but they are present in quantities far too low to cause any physiological response in people who drink the water or bathe in it. Nevertheless, medical experts contend that eliminating these trace amounts from the water will have public health benefits, since ____________.

(A)

some of the medicinal substances found in lakes and rivers are harmless to humans in large quantities

(B)

some of the medicinal substances found in lakes and rivers can counteract possible harmful effects of other such substances found there

(C)

people who develop undesirable side effects when being treated with medicines that contain these substances generally have their treatment changed

(D)

most medicinal substances that reach lakes or rivers rapidly break down into harmless substances

(E)

disease-causing bacteria exposed to low concentrations of certain medicinal substances can become resistant to them

We are essentially looking for an answer that favours the removal of such medicinal substances.

I saw (C) and (E) as such examples. However, why would E be considered a stronger choice than C?

Thanks for all your help.

Best Greetings.

Could someone explain why B is incorrect?
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Re: Using new detection techniques, researchers have found [#permalink]

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24 Apr 2016, 12:13
1
KUDOS
Hi there,
if you break out the conclusion, you will probably find this sentence rather easy.
The conclusion states that there would be benefits in eliminating the trace amount of medicinal substances from lakes and rivers.

Option B states that the medicinal substances can counteract possible harmful effects of substances found there. Clearly, it would not be beneficial to remove something that is good for the lakes and rivers. Therefore, this answer choice is paradoxical and rather states the opposite of what should be stated.

Instead, take a look at answer choice E. This option states a disadvantage of not eliminating the medicinal substances - that the bacteria in the river may become resistant. Hence, this is the right answer choice.

elegan wrote:
Hello All,

I'm looking at this question:

-------------
Which of the following most logically completes the argument?

Using new detection techniques, researchers have found trace amounts of various medicinal substances in lakes and rivers. Taken in large quantities, these substances could have serious health effects, but they are present in quantities far too low to cause any physiological response in people who drink the water or bathe in it. Nevertheless, medical experts contend that eliminating these trace amounts from the water will have public health benefits, since ____________.

(A)

some of the medicinal substances found in lakes and rivers are harmless to humans in large quantities

(B)

some of the medicinal substances found in lakes and rivers can counteract possible harmful effects of other such substances found there

(C)

people who develop undesirable side effects when being treated with medicines that contain these substances generally have their treatment changed

(D)

most medicinal substances that reach lakes or rivers rapidly break down into harmless substances

(E)

disease-causing bacteria exposed to low concentrations of certain medicinal substances can become resistant to them

We are essentially looking for an answer that favours the removal of such medicinal substances.

I saw (C) and (E) as such examples. However, why would E be considered a stronger choice than C?

Thanks for all your help.

Best Greetings.

Could someone explain why B is incorrect?
Re: Using new detection techniques, researchers have found   [#permalink] 24 Apr 2016, 12:13
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# Using new detection techniques, researchers have found

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