GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 18 Jun 2018, 21:47

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Research studies on albatrosses and other soaring birds have found tha

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Expert Post
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 46146
Research studies on albatrosses and other soaring birds have found tha [#permalink]

Show Tags

New post 05 Jun 2018, 00:33
1
1
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

47% (02:05) correct 53% (02:04) wrong based on 71 sessions

HideShow timer Statistics

Research studies on albatrosses and other soaring birds have found that the least intrusive geolocation tag placement, defined as the placement that minimizes interference with movement, is close to the center of the bird's back. While the placement increases drag when the birds dive into the water, it does not affect the birds’ ability to stay aloft for days at a time because the feathers of the back aren’t used for lift during soaring. However, the majority of studies on birds in general indicate that the least intrusive geolocation tag placement is under the tailfeathers, a placement that would cause great instability during flight but that doesn’t interfere with underwater movement.

Which of the following, if true, most helps to explain the exception noted above?


A. Albatrosses are much larger than other soaring birds, so geolocation tags make up less of their total body weight.

B. Geolocation tagging practices have changed over time to include smaller devices.

C. Soaring doesn’t involve the tailfeathers, so geotag placement there will not affect movement.

D. Albatrosses tend to expend less energy than other birds while soaring because of their large wingspan.

E. The majority of studies were done on penguins, which don’t fly but do spend much of their time hunting underwater.

_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics

Expert Post
examPAL Representative
User avatar
S
Joined: 07 Dec 2017
Posts: 417
Re: Research studies on albatrosses and other soaring birds have found tha [#permalink]

Show Tags

New post 05 Jun 2018, 02:21
The answer is E.
We can solve this question using the

Logical

approach, as it all about understanding the logic of the comparison being made.
The argument presents a general conclusion (studies of all birds suggest tail-feathers, good for diving and bad for flying) and an exception (soaring birds - back, good for flying, bad for diving).
Therefore, the reason for the exception must be some fundamental difference between the soaring birds and the many studies about birds in general - a difference which explains why soaring birds need to fly more (which is pretty obvious) and the birds form the general studies need to dive and be underwater more. (E) tells us exactly that: The majority of studies were done on penguins, which don’t fly but do spend much of their time hunting underwater.

As always, we can use the

Alternative

method of elimination as well:


A. Albatrosses are much larger than other soaring birds, so geolocation tags make up less of their total body weight. doesn't explain why the tags would be in a different location for them

B. Geolocation tagging practices have changed over time to include smaller devices. doesn't explain why the tags would be in a different location for soaring birds


C. Soaring doesn’t involve the tailfeathers, so geotag placement there will not affect movement. the opposite: this suggests that soaring birds would have no problem with the tag being placed at the tail feathers as well

D. Albatrosses tend to expend less energy than other birds while soaring because of their large wingspan. irrelevant comparison: the exception is of all soaring birds vs. birds form the general studies, not between albatrosses and other soaring birds
_________________

David
Senior tutor at examPAL
Signup for a free GMAT course
Image
Image
We won some awards:
Image
Join our next webinar (free)
Save up to $250 on examPAL packages (special for GMAT Club members)

Intern
Intern
avatar
B
Joined: 31 Mar 2018
Posts: 17
Re: Research studies on albatrosses and other soaring birds have found tha [#permalink]

Show Tags

New post 05 Jun 2018, 07:42
I find difficulty in comprehending the question’s meaning. Please help....in Critical Reasoning.

Posted from my mobile device
1 KUDOS received
Intern
Intern
avatar
B
Joined: 28 Jul 2016
Posts: 35
Location: India
GMAT 1: 680 Q50 V32
GPA: 3.97
Re: Research studies on albatrosses and other soaring birds have found tha [#permalink]

Show Tags

New post 05 Jun 2018, 10:30
1
In this “explain the paradox” question, you are told that for albatrosses, placing geolocation tags in the middle of the back of the bird interferes less with bird movement than does placing geolocation tags under the tail feathers. However, most studies on birds, in general, show the opposite to be true. In looking to resolve this paradox, you should ask yourself - what makes albatrosses and soaring birds special compared to other birds studied?

Choice (A) makes a distinction between albatrosses and other soaring birds. Since both albatrosses and soaring birds are addressed together, this doesn’t given information as to why these birds are more affected by one geolocation tag placement and other birds are more affected by another. Eliminate (A).

Choice (B) can be eliminated because it deals with change over time - something that isn’t addressed within the question. All the studies referenced could have been in the last year or they could have been over the course of 20 years. There’s no way of knowing, so there’s no way of knowing whether this would have an affect on placement.

If choice (C) was true, then soaring birds would be less affected by placing the geolocation tags than would other flying birds, not more.

Choice (D) can also be eliminated. The question deals with relative interference with movement, not the absolute amount of energy expended.

Choice (E) is correct. You are told that geolocation tags can affect drag (which occurs in the water) and lift (which occurs in the air). Since you are told that penguins can’t fly but that they do swim, you can conclude that only drag matters, so if the majority of studies were done on penguins, then the majority of studies would say that the ideal placement is under the tailfeathers.
_________________

Please give Kudos. Kudos encourage active discussions and help the community grow

Manager
Manager
avatar
B
Joined: 19 Feb 2017
Posts: 127
GMAT ToolKit User
Re: Research studies on albatrosses and other soaring birds have found tha [#permalink]

Show Tags

New post 05 Jun 2018, 11:15
IMO the answer is E. Only E explains the paradox between the albatrosses(& other flying birds) and the birds on which experiments were done.
Expert Post
examPAL Representative
User avatar
S
Joined: 07 Dec 2017
Posts: 417
Re: Research studies on albatrosses and other soaring birds have found tha [#permalink]

Show Tags

New post 05 Jun 2018, 23:11
viveknegi wrote:
I find difficulty in comprehending the question’s meaning. Please help....in Critical Reasoning.

Posted from my mobile device


can you explain what you find confusing?
_________________

David
Senior tutor at examPAL
Signup for a free GMAT course
Image
Image
We won some awards:
Image
Join our next webinar (free)
Save up to $250 on examPAL packages (special for GMAT Club members)

Expert Post
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 46146
Re: Research studies on albatrosses and other soaring birds have found tha [#permalink]

Show Tags

New post 10 Jun 2018, 03:59
Bunuel wrote:
Research studies on albatrosses and other soaring birds have found that the least intrusive geolocation tag placement, defined as the placement that minimizes interference with movement, is close to the center of the bird's back. While the placement increases drag when the birds dive into the water, it does not affect the birds’ ability to stay aloft for days at a time because the feathers of the back aren’t used for lift during soaring. However, the majority of studies on birds in general indicate that the least intrusive geolocation tag placement is under the tailfeathers, a placement that would cause great instability during flight but that doesn’t interfere with underwater movement.

Which of the following, if true, most helps to explain the exception noted above?


A. Albatrosses are much larger than other soaring birds, so geolocation tags make up less of their total body weight.

B. Geolocation tagging practices have changed over time to include smaller devices.

C. Soaring doesn’t involve the tailfeathers, so geotag placement there will not affect movement.

D. Albatrosses tend to expend less energy than other birds while soaring because of their large wingspan.

E. The majority of studies were done on penguins, which don’t fly but do spend much of their time hunting underwater.


VERITAS PREP OFFICIAL SOLUTION:



In this “explain the paradox” question, you are told that for albatrosses, placing geolocation tags in the middle of the back of the bird interferes less with bird movement than does placing geolocation tags under the tail feathers. However most studies on birds in general show the opposite to be true. In looking to resolve this paradox, you should ask yourself - what makes albatrosses and soaring birds special compared to other birds studied?

Choice (A) makes a distinction between albatrosses and other soaring birds. Since both albatrosses and soaring birds are addressed together, this doesn’t given information as to why these birds are more affected by one geolocation tag placement and other birds are more affected by another. Eliminate (A).

Choice (B) can be eliminated because it deals with change over time - something that isn’t addressed within the question. All the studies referenced could have been in the last year or they could have been over the course of 20 years. There’s no way of knowing, so there’s no way of knowing whether this would have an affect on placement.

If choice (C) was true, then soaring birds would be less affected by placing the geolocation tags than would other flying birds, not more.

Choice (D) can also be eliminated. The question deals with relative interference with movement, not the absolute amount of energy expended.

Choice (E) is correct. You are told that geolocation tags can affect drag (which occurs in the water) and lift (which occurs in the air). Since you are told that penguins can’t fly but that they do swim, you can conclude that only drag matters, so if the majority of studies were done on penguins, then the majority of studies would say that the ideal placement is under the tailfeathers.
_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics

Re: Research studies on albatrosses and other soaring birds have found tha   [#permalink] 10 Jun 2018, 03:59
Display posts from previous: Sort by

Research studies on albatrosses and other soaring birds have found tha

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.