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# During the last 18 years, the number of people who live or work in the

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Manager
Joined: 25 Sep 2015
Posts: 106
Location: United States
GMAT 1: 700 Q48 V37
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During the last 18 years, the number of people who live or work in the  [#permalink]

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10 Mar 2016, 17:49
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95% (01:14) correct 5% (01:59) wrong based on 96 sessions

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During the last 18 years, the number of people who live or work in the Dry river Valley, which is prone to flash flooding, has continually increased, as has traffic on local roads and bridges. However, the number of people caught in flash floods has decreased, even though the annual number of floods has increased slightly.

Which of the following if true, best explains the decrease described above?

A) Flash floods are more likely to happen in the first hour of a rainstorm than afterward.
B) Flash floods killed some people in the dry river valley in every one of the last 18 years.
C) Better meteorological technology, combined with a better understanding of the conditions conducive to flash flooding has increasingly improved local authorities' ability to predict when and where flash floods occur.
D) Many people work in the dry river valley but live elsewhere.
E) A law that went into effect 18 years ago mandated that all new homes built in the valley be built on raised foundations, making those homes much less susceptible to flood damage.

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Joined: 02 Aug 2009
Posts: 7334
Re: During the last 18 years, the number of people who live or work in the  [#permalink]

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10 Mar 2016, 19:21
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rachitshah wrote:
During the last 18 years, the number of people who live or work in the Dry river Valley, which is prone to flash flooding, has continually increased, as has traffic on local roads and bridges. However, the number of people caught in flash floods has decreased, even though the annual number of floods has increased slightly.

Which of the following if true, best explains the decrease described above?

A) Flash floods are more likely to happen in the first hour of a rainstorm than afterward.
B) Flash floods killed some people in the dry river valley in every one of the last 18 years.
C) Better meteorological technology, combined with a better understanding of the conditions conducive to flash flooding has increasingly improved local authorities' ability to predict when and where flash floods occur.
D) Many people work in the dry river valley but live elsewhere.
E) A law that went into effect 18 years ago mandated that all new homes built in the valley be built on raised foundations, making those homes much less susceptible to flood damage.

Hi,
the PARA basically states taht MORE number of people have started residing in an area which is pron eto flash floods. even though the intensity of flash floods has increased, fewer number get caught in these.

lets see the choices

A) Flash floods are more likely to happen in the first hour of a rainstorm than afterward.
It DOESN"T help th argument in either way

B) Flash floods killed some people in the dry river valley in every one of the last 18 years.
SAme as A- OUT of context

C) Better meteorological technology, combined with a better understanding of the conditions conducive to flash flooding has increasingly improved local authorities' ability to predict when and where flash floods occur.
CORRECT-- if people are forewarned because of increased capabilities, fewer people are likely to venture out during such times

D) Many people work in the dry river valley but live elsewhere.
The argument talks of both categories working/living not getting caught

E) A law that went into effect 18 years ago mandated that all new homes built in the valley be built on raised foundations, making those homes much less susceptible to flood damage.
This can help people residing . but what about people working or on roads

C

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Re: During the last 18 years, the number of people who live or work in the  [#permalink]

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04 Sep 2018, 09:50
During the last 18 years, the number of people who live or work in the Dry river Valley, which is prone to flash flooding, has continually increased, as has traffic on local roads and bridges. However, the number of people caught in flash floods has decreased, even though the annual number of floods has increased slightly.

Condition: 1. Dry river Valley, which is prone to flash flooding.
2. The annual number of floods has increased slightly.

The intended input: The number of people who live or work in the Dry river Valley, has continually increased.

Unintended Outcome: The number of people caught in flash floods has decreased, even though the annual number of floods has increased slightly.

Quote:
Which of the following if true, best explains the decrease described above?

The question basically is a type of resolve the paradox kind of question.

A) Flash floods are more likely to happen in the first hour of a rainstorm than afterward.
B) Flash floods killed some people in the dry river valley in every one of the last 18 years.
Quote:
C) Better meteorological technology, combined with a better understanding of the conditions conducive to flash flooding has increasingly improved local authorities' ability to predict when and where flash floods occur.

Only this is the answer option which resolves the paradox for the aforementioned condition.
If with better meteorological technology, and better understanding of the conditions conducive to flash flooding has increasingly improved local authorities' ability to predict when and where flash floods occur, then local authorities may take appropriate action as, when and wherever required.
This clearly provides enough reason to bridge the gap between the intended input and unintended/surprise outcome.

D) Many people work in the dry river valley but live elsewhere.

E) A law that went into effect 18 years ago mandated that all new homes built in the valley be built on raised foundations, making those homes much less susceptible to flood damage.
Re: During the last 18 years, the number of people who live or work in the   [#permalink] 04 Sep 2018, 09:50
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