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A study of energy consumption revealed that homeowners living within

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A study of energy consumption revealed that homeowners living within  [#permalink]

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New post Updated on: 14 Feb 2019, 01:42
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A
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C
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E

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A study of energy consumption revealed that homeowners living within 100 miles of the Gulf of Mexico used less energy from November 1 to April 30 than did homeowners in any other region of the United States. The same study found that from May 1 to October 31, those same homeowners used more energy than any other homeowners.

Which of the following, if true, would most contribute to an explanation of the facts above?


(A) People who own homes near the Gulf of Mexico often own second homes in cooler locations, where they spend the summers.

(B) Air conditioning a home is a more energy efficient process than heating a similarly sized home.

(C) Homes near the Gulf of Mexico require very little heating during the warm winters, but air conditioners must run longer in the summer to cool the warm, humid air.

(D) The average daily temperature is lower year-round near the Gulf of Mexico than in other areas of the United States.

(E) Because of the large number of refineries located in the Gulf region, the price of energy there is less than in any other area of the country.

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Originally posted by rohan2345 on 09 May 2017, 00:41.
Last edited by Bunuel on 14 Feb 2019, 01:42, edited 1 time in total.
Renamed the topic and edited the question.
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Re: A study of energy consumption revealed that homeowners living within  [#permalink]

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New post 10 May 2018, 03:03
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The answer is C.


We can solve this question logically, by simply using the information to make logical inferences. People in the gulf of Mexico use little energy in the winter (November-may) but a lot in the summer (may-october), it stands to reason that in this area winters don't require much heating (because the weather is hot) but summers require much air conditiong (for the same reason). This is precisely what (C) tells us.

As always, a possible but less efficient way to solve is by process of elimination:
(A) People who own homes near the Gulf of Mexico often own second homes in cooler locations, where they spend the summers. on the contrary: in the summer is when they spend the most electricity.
(B) Air conditioning a home is a more energy efficient process than heating a similarly sized home. on the contrary - in the summer, when we' expect them to use AC, is when the consumption appears to be least efficient.
(C) Homes near the Gulf of Mexico require very little heating during the warm winters, but air conditioners must run longer in the summer to cool the warm, humid air. fits perfectly: this explains both why they use little electricity in winter and a lot in the summer
(D) The average daily temperature is lower year-round near the Gulf of Mexico than in other areas of the United States. on the contrary - this would imply that they need more heating in the winter, which would lead to more, not less, electricity consumption, and less cooling in the summer, which would mean less electricity, not more
(E) Because of the large number of refineries located in the Gulf region, the price of energy there is less than in any other area of the country. no - this would lead us to expect they would use more electricity at all times, and not less in the winter
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Re: A study of energy consumption revealed that homeowners living within  [#permalink]

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New post 14 May 2018, 20:15
Which of the following, if true, would most contribute to an explanation of the facts above?

(A) People who own homes near the Gulf of Mexico often own second homes in cooler locations, where they spend the summers. OPPOSITE ANSWER CHOICE as major energy consumption is in summers
(B) Air conditioning a home is a more energy efficient process than heating a similarly sized home. OPPOSITE ANSWER CHOICE
(C) Homes near the Gulf of Mexico require very little heating during the warm winters, but air conditioners must run longer in the summer to cool the warm, humid air. CORRECT , since during summers the consumption of energy is higher in Gulf of Mexico ACs must run for a longer period of time in order to cool the warm air resulting in increased energy consumption
(D) The average daily temperature is lower year-round near the Gulf of Mexico than in other areas of the United States. Opposite Option as it would lead to more energy consumption during winters in Gulf of Mexico as temperature is lower on an average throughout the year, so more heating would be required.
(E) Because of the large number of refineries located in the Gulf region, the price of energy there is less than in any other area of the country - Incorrect as this would lead to more energy consumption throughout the year in Gulf region rather than in summers
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Re: A study of energy consumption revealed that homeowners living within  [#permalink]

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New post 26 Feb 2019, 02:43
rohan2345 wrote:
A study of energy consumption revealed that homeowners living within 100 miles of the Gulf of Mexico used less energy from November 1 to April 30 than did homeowners in any other region of the United States. The same study found that from May 1 to October 31, those same homeowners used more energy than any other homeowners.

Which of the following, if true, would most contribute to an explanation of the facts above?


(A) People who own homes near the Gulf of Mexico often own second homes in cooler locations, where they spend the summers.

(B) Air conditioning a home is a more energy efficient process than heating a similarly sized home.

(C) Homes near the Gulf of Mexico require very little heating during the warm winters, but air conditioners must run longer in the summer to cool the warm, humid air.

(D) The average daily temperature is lower year-round near the Gulf of Mexico than in other areas of the United States.

(E) Because of the large number of refineries located in the Gulf region, the price of energy there is less than in any other area of the country.


OFFICIAL EXPLANATION:



C. This critical-reasoning question asks you to strengthen the argument by providing a piece to the cause-and-effect pattern. With cause-and-effect questions, you select the answer choice that could logically cause the effects noted in the premises. So for this problem, you have to decide which of the five choices helps explain why Gulf Coast homes use little energy in the winter and a great deal of energy in the summer. Without even looking at the answer choices, you may conclude that the Gulf Coast climate is milder than other parts of the nation in the winter and perhaps hotter in the summer. The correct answer probably addresses that issue.

You can eliminate Choice (A) because if most Gulf Coast residents spend the summer elsewhere, their vacant homes would use less energy during summer months rather than more. This answer would produce the opposite effect of that explained in the argument. Choice (B) would also produce the opposite effect of that found in the argument. Another important reason for eliminating Choice (B) is that it doesn’t provide a way of comparing energy use in the Gulf region to energy use in the rest of the country, which is the real issue in this argument.

Choice (C) sounds like the answer we imagined before reading through the choices. It explains why the Gulf region would have lower energy use in winter and higher use in summer, which may explain why it’s different from the rest of the country as a whole. Although Choice (C) is probably the correct answer, read through the remaining two choices
just to be sure.

Choice (D) doesn’t work because a region that’s cool year-round would have high energy consumption in the winter for heat and low consumption in the summer. And you can eliminate Choice (E) because the argument is about energy consumption, not energy price. So the correct answer is Choice (C).
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Re: A study of energy consumption revealed that homeowners living within   [#permalink] 26 Feb 2019, 02:43
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