Events & Promotions
| Last visit was: 06 Sep 2026, 04:30 |
It is currently 06 Sep 2026, 04:30 |
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Sep 0609:30 AM EDT
-12:30 PM EST
Top scores are possible when you enroll in a powerful EA course, taught live online + 6 months access to TTP OnDemand video courses included! Perfect class schedule and easy course access for working professionals. Class starts Sundays Sept. 6, 2026.
Sep 0712:01 AM PDT
-11:59 PM PDT
On the 7th, GMAT Club Tests will be Free! Including all the Quizzes, Questions, and Tests. 12 AM - 11:59 PM PDT
Sep 0201:00 PM EDT
-11:59 PM EDT
Take 30% off all study plans with code COURSEWORK - Expires on Monday 9/7
Sep 0410:00 AM EDT
-11:59 PM EDT
We’ve worked incredibly hard to build TTP into the best test prep experience possible, and it would mean a lot to us to win Newsweek’s 2026 Readers’ Choice Award for Best Test Prep. If TTP has helped you, we’d be incredibly grateful for your vote.- Sep 07
10:00 AM PDT
-11:00 AM PDT
A complete walkthrough of GMAT Club’s free 12-week GMAT study plan: what you study each week, how progress and goals are tracked, how the error log works, and how your practice unlocks paid tools at no cost. - Sep 09
07:00 AM PDT
-10:00 AM PDT
Meet AdComs and explore top Master’s programs - MiM, MiF, MSc, MSBA and more. - Application Fee Waivers - Free 1-Week of GMAT Club Tests: - Master's Application Toolkit - Grand Prize Giveaway - Sep 09
10:00 AM PDT
-11:00 AM PDT
Three MBA applications. Three rejections. No interview invites. A year later, Aman was admitted to Cambridge Judge, SMU, and IMD. In this episode of MBA Admit Stories, Aman shares how he rebuilt his MBA application... 
Sep 1507:00 PM EDT
-09:00 PM EST
Elite scores are possible when you enroll in a powerful GMAT course, taught live online + 6 months access to TTP OnDemand video courses included! Class starts Tues/Thurs Sept. 15, 2026 - Nov. 15, 2027, 7:00pm-9:00pm EST
Sep 2108:00 PM EDT
-10:00 PM EDT
Boost your GMAT score in less than one month in a live online class + 6 months access to TTP OnDemand video courses included! Class starts Mon, Tues, Wed, Thur, Fri Sept. 21, 2026 - Oct. 9, 2027, 7:00pm-10:00pm EST
Updated on: 24 Mar 2026, 06:37
Originally posted by Sajjad1994 on 25 Sep 2017, 11:53.
Last edited by Bunuel on 24 Mar 2026, 06:37, edited 13 times in total.
Last edited by Bunuel on 24 Mar 2026, 06:37, edited 13 times in total.
Kudos
Bookmarks
Question 1
B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
85% (02:35) correct
15%
(02:51) wrong
based on 927
sessions
History
Date
Time
Result
Not Attempted Yet
Question 2
B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
83% (01:02) correct 17%
(01:35) wrong
based on 940
sessions
History
Date
Time
Result
Not Attempted Yet
Question 3
E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
56% (00:55) correct 44%
(01:13) wrong
based on 941
sessions
History
Date
Time
Result
Not Attempted Yet
Question 4
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
70% (00:55) correct 30%
(00:57) wrong
based on 949
sessions
History
Date
Time
Result
Not Attempted Yet
Question 5
D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
72% (00:37) correct 28%
(00:46) wrong
based on 925
sessions
History
Date
Time
Result
Not Attempted Yet
Question 6
B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
62% (00:56) correct 38%
(00:55) wrong
based on 911
sessions
History
Date
Time
Result
Not Attempted Yet
The study of cetacean intelligence has added to our understanding of dolphin behavior. Even though cetaceans, which are marine animals including dolphins, whales, and porpoises, are widely considered intelligent species, conclusions about the type and extent of dolphin intelligence have not yet been reached. However, there are several things that we do know about the ways in which dolphins communicate and behave in groups.
Researchers study the level of communication among dolphins because communication systems can offer insight into an animal’s intelligence. Dolphins produce two primary types of vocalizations called clicks and whistles. Dolphins generally use clicks for the purposes of echolocation and whistles for communication. Dolphins emit clicks as rapid broadband bursts that are sent out into their environment and then echo back, giving them information about their surroundings. Whistles differ from clicks by being sent out as narrow-band frequency modulated signals, which are for communications such as contact calls. Strong evidence supports the idea that dolphins use signature whistles to identify and call to each other.
One hypothesis called the “acoustic flashlight” hypothesis maintains that dolphins may be able to learn passively about their surroundings by listening in on the echolocation inspections of other dolphins. Scientists are researching this idea by looking at how dolphins participate in postural pointing, an activity that humans perform when they point a finger to direct another person towards an object or location.
Communication is also an important part of how dolphins behave in groups, which can range in size from a pair of dolphins to a pod of hundreds of individuals. Researchers have noticed that large packs rely on a highly organized method of communication when responding to predators, such as sharks. When a group of dolphins reacts to an unexpected disturbance, it will quickly move in near-unison to avoid the threat. In this way, dolphins rely on visual and auditory cues to communicate their location and to interpret the locations of others in the pod.
Researchers study the level of communication among dolphins because communication systems can offer insight into an animal’s intelligence. Dolphins produce two primary types of vocalizations called clicks and whistles. Dolphins generally use clicks for the purposes of echolocation and whistles for communication. Dolphins emit clicks as rapid broadband bursts that are sent out into their environment and then echo back, giving them information about their surroundings. Whistles differ from clicks by being sent out as narrow-band frequency modulated signals, which are for communications such as contact calls. Strong evidence supports the idea that dolphins use signature whistles to identify and call to each other.
One hypothesis called the “acoustic flashlight” hypothesis maintains that dolphins may be able to learn passively about their surroundings by listening in on the echolocation inspections of other dolphins. Scientists are researching this idea by looking at how dolphins participate in postural pointing, an activity that humans perform when they point a finger to direct another person towards an object or location.
Communication is also an important part of how dolphins behave in groups, which can range in size from a pair of dolphins to a pod of hundreds of individuals. Researchers have noticed that large packs rely on a highly organized method of communication when responding to predators, such as sharks. When a group of dolphins reacts to an unexpected disturbance, it will quickly move in near-unison to avoid the threat. In this way, dolphins rely on visual and auditory cues to communicate their location and to interpret the locations of others in the pod.
1. It can be inferred from the passage that a dolphin would use clicks instead of whistles to:
A. call to another member of the same pod
B. locate a possible route through an underwater obstacle
C. communicate a perceived threat to other dolphins
D. contact other dolphins when separated from a group
E. identify itself to another calling dolphin
A. call to another member of the same pod
B. locate a possible route through an underwater obstacle
C. communicate a perceived threat to other dolphins
D. contact other dolphins when separated from a group
E. identify itself to another calling dolphin
2. According to the passage, rapid communication enables dolphins to:
A. work in unison to locate food sources
B. move quickly as a group to escape a perceived threat
C. establish relationships quickly with their peers
D. have more highly organized hunting patterns
E. establish their territories when other cetaceans are present
A. work in unison to locate food sources
B. move quickly as a group to escape a perceived threat
C. establish relationships quickly with their peers
D. have more highly organized hunting patterns
E. establish their territories when other cetaceans are present
3. It can be inferred from the passage that if another animal does not have a communication system as highly advanced as that of a dolphin, then:
A. the other animal will be less likely to survive a shark attack
B. the other animal is probably a whale or porpoise
C. the other animal probably does not travel in a group with others of its kind
D. the other animal does not engage in postural pointing
E. the other animal is likely considered less intelligent than the dolphin
A. the other animal will be less likely to survive a shark attack
B. the other animal is probably a whale or porpoise
C. the other animal probably does not travel in a group with others of its kind
D. the other animal does not engage in postural pointing
E. the other animal is likely considered less intelligent than the dolphin
4. Which of the following is the function of the first paragraph?
A. to contrast the communication styles of dolphins with those of other cetaceans
B. to define an abstract idea in order to simplify the discussion that follows
C. to introduce the passage’s focus on how the dolphins communicate and behave in groups
D. to explain the cause of an event that the following paragraphs discuss in detail
E. to show the consequences of a mistake made in earlier research
A. to contrast the communication styles of dolphins with those of other cetaceans
B. to define an abstract idea in order to simplify the discussion that follows
C. to introduce the passage’s focus on how the dolphins communicate and behave in groups
D. to explain the cause of an event that the following paragraphs discuss in detail
E. to show the consequences of a mistake made in earlier research
5. The author of this passage is primarily concerned with:
A. contrasting dolphin communications with those of other cetaceans
B. defining the term “cetacean intelligence” by offering an example of dolphin communication
C. offering an example of how dolphins used highly-developed communication patterns to escape predators
D. explaining how dolphins communicate and behave in groups
E. providing an in-depth analysis of a disputed claim
A. contrasting dolphin communications with those of other cetaceans
B. defining the term “cetacean intelligence” by offering an example of dolphin communication
C. offering an example of how dolphins used highly-developed communication patterns to escape predators
D. explaining how dolphins communicate and behave in groups
E. providing an in-depth analysis of a disputed claim
6. The passage suggests that postural pointing provides evidence of a dolphin’s ability to:
A. mimic a similar human action
B. learn by listening to the clicks made by other dolphins
C. comprehend visual cues such as light and shadow
D. respond more intelligently to auditory cues than do other cetaceans
E. rapidly react to perceived threats
A. mimic a similar human action
B. learn by listening to the clicks made by other dolphins
C. comprehend visual cues such as light and shadow
D. respond more intelligently to auditory cues than do other cetaceans
E. rapidly react to perceived threats
Source: Www.GMATPracticeQuestions.Com
02 Apr 2020, 15:57
Kudos
Bookmarks
1. B --> "Dolphins emit clicks as rapid broadband bursts that are sent out into their environment and then echo back, giving them information about their surroundings."
2. B --> "Researchers have noticed that large packs rely on a highly organized method of communication when responding to predators, such as sharks. When a group of dolphins reacts to an unexpected disturbance, it will quickly move in near-unison to avoid the threat."
3. E --> "conclusions about the type and extent of dolphin intelligence have not yet been reached. However, there are several things that we do know about the ways in which dolphins communicate and behave in groups. Researchers study the level of communication among dolphins because communication systems can offer insight into an animal’s intelligence."
4. C --> The author is introducing the idea, "even though this and that, there are several things we know..."
5. D
6. B --> "One hypothesis called the “acoustic flashlight” hypothesis maintains that dolphins may be able to learn passively about their surroundings by listening in on the echolocation inspections of other dolphins. Scientists are researching this idea by looking at how dolphins participate in postural pointing"
2. B --> "Researchers have noticed that large packs rely on a highly organized method of communication when responding to predators, such as sharks. When a group of dolphins reacts to an unexpected disturbance, it will quickly move in near-unison to avoid the threat."
3. E --> "conclusions about the type and extent of dolphin intelligence have not yet been reached. However, there are several things that we do know about the ways in which dolphins communicate and behave in groups. Researchers study the level of communication among dolphins because communication systems can offer insight into an animal’s intelligence."
4. C --> The author is introducing the idea, "even though this and that, there are several things we know..."
5. D
6. B --> "One hypothesis called the “acoustic flashlight” hypothesis maintains that dolphins may be able to learn passively about their surroundings by listening in on the echolocation inspections of other dolphins. Scientists are researching this idea by looking at how dolphins participate in postural pointing"
03 Apr 2020, 04:14
Kudos
Bookmarks
It can be inferred from the passage that a dolphin would use clicks instead of whistles to:
A. call to another member of the same pod This says just the opposite from the passage. False.
B. locate a possible route through an underwater obstacle We have that clicks are for "seeing" and whistles to "calling". This is accurate, right.
C. communicate a perceived threat to other dolphins That is still under research, so cannot be inferred as strongly as the previous one. False.
D. contact other dolphins when separated from a group That is still under research, so cannot be inferred as strongly as the previous one. False.
E. identify itself to another calling dolphin That is with the whistles. False.
According to the passage, rapid communication enables dolphins to:
A. work in unison to locate food sources This is no stated, could be inferred though. Wrong.
B. move quickly as a group to escape a perceived threat That is specifically stated in the last paragraph. Right.
C. establish relationships quickly with their peers This is totally made up, there is nothing about it in the text. Wrong.
D. have more highly organized hunting patterns Speed is not mentioned, just the communication. Wrong.
E. establish their territories when other cetaceans are present No mention at all of interactions with other cetaceans. Wrong.
It can be inferred from the passage that if another animal does not have a communication system as highly advanced as that of a dolphin, then:
A. the other animal will be less likely to survive a shark attack This could be somehow inferred, but not really, a whale would survive because of it size, etc. Wrong.
B. the other animal is probably a whale or porpoise There is no mention on comparison between their communication systems. Wrong.
C. the other animal probably does not travel in a group with others of its kind There is no point about the level of the communications and the social life of dolphins. Wrong.
D. the other animal does not engage in postural pointing There is no comparison of postural positioning with other animals, just humans but without any depth on its level. Wrong.
E. the other animal is likely considered less intelligent than the dolphin The intelligence is the main point of the passage to bring the comunication, so this is correctly inferred from the passage. Right.
Which of the following is the function of the first paragraph?
A. to contrast the communication styles of dolphins with those of other cetaceans There is mention of other cetaceans but not of their communication styles. Wrong.
B. to define an abstract idea in order to simplify the discussion that follows The idea is not abstract, is quite precise but nothing is defined. Wrong.
C. to introduce the passage’s focus on how the dolphins communicate and behave in groups This is precisely what the last sentence does. Right.
D. to explain the cause of an event that the following paragraphs discuss in detail There is no cause of an event, could be the cause of the discussion, too vague. Wrong.
E. to show the consequences of a mistake made in earlier research There is no mention of any mistake made, just more developments to better understand. Wrong.
The author of this passage is primarily concerned with:
A. contrasting dolphin communications with those of other cetaceans This already appeared, there is no comparison. Wrong.
B. defining the term “cetacean intelligence” by offering an example of dolphin communication The term is nowhere defined. Wrong.
C. offering an example of how dolphins used highly-developed communication patterns to escape predators This is what paragraphs 2-4 do. Right.
D. explaining how dolphins communicate and behave in groups This is explained but is not the main concern, is a consecuence of it. Wrong.
E. providing an in-depth analysis of a disputed claim There is no disputed claim mentioned in the passage, there is no in-depth review neither. Wrong.
The passage suggests that postural pointing provides evidence of a dolphin’s ability to:
A. mimic a similar human action Not really, that is not an action neither is mimed. Wrong.
B. learn by listening to the clicks made by other dolphins Learn may not be the best word but means "notice", "get information" here. This is just what the research is trying to prove. Right.
C. comprehend visual cues such as light and shadow No mention of ligh or shadows here, we are talking of waves and sounds!. Wrong.
D. respond more intelligently to auditory cues than do other cetaceans There is no mention about the response or intelligence of this "feature". Wrong.
E. rapidly react to perceived threats This would be rapid communication, it is a trap. Wrong.
Regards,
Pablo
A. call to another member of the same pod This says just the opposite from the passage. False.
B. locate a possible route through an underwater obstacle We have that clicks are for "seeing" and whistles to "calling". This is accurate, right.
C. communicate a perceived threat to other dolphins That is still under research, so cannot be inferred as strongly as the previous one. False.
D. contact other dolphins when separated from a group That is still under research, so cannot be inferred as strongly as the previous one. False.
E. identify itself to another calling dolphin That is with the whistles. False.
According to the passage, rapid communication enables dolphins to:
A. work in unison to locate food sources This is no stated, could be inferred though. Wrong.
B. move quickly as a group to escape a perceived threat That is specifically stated in the last paragraph. Right.
C. establish relationships quickly with their peers This is totally made up, there is nothing about it in the text. Wrong.
D. have more highly organized hunting patterns Speed is not mentioned, just the communication. Wrong.
E. establish their territories when other cetaceans are present No mention at all of interactions with other cetaceans. Wrong.
It can be inferred from the passage that if another animal does not have a communication system as highly advanced as that of a dolphin, then:
A. the other animal will be less likely to survive a shark attack This could be somehow inferred, but not really, a whale would survive because of it size, etc. Wrong.
B. the other animal is probably a whale or porpoise There is no mention on comparison between their communication systems. Wrong.
C. the other animal probably does not travel in a group with others of its kind There is no point about the level of the communications and the social life of dolphins. Wrong.
D. the other animal does not engage in postural pointing There is no comparison of postural positioning with other animals, just humans but without any depth on its level. Wrong.
E. the other animal is likely considered less intelligent than the dolphin The intelligence is the main point of the passage to bring the comunication, so this is correctly inferred from the passage. Right.
Which of the following is the function of the first paragraph?
A. to contrast the communication styles of dolphins with those of other cetaceans There is mention of other cetaceans but not of their communication styles. Wrong.
B. to define an abstract idea in order to simplify the discussion that follows The idea is not abstract, is quite precise but nothing is defined. Wrong.
C. to introduce the passage’s focus on how the dolphins communicate and behave in groups This is precisely what the last sentence does. Right.
D. to explain the cause of an event that the following paragraphs discuss in detail There is no cause of an event, could be the cause of the discussion, too vague. Wrong.
E. to show the consequences of a mistake made in earlier research There is no mention of any mistake made, just more developments to better understand. Wrong.
The author of this passage is primarily concerned with:
A. contrasting dolphin communications with those of other cetaceans This already appeared, there is no comparison. Wrong.
B. defining the term “cetacean intelligence” by offering an example of dolphin communication The term is nowhere defined. Wrong.
C. offering an example of how dolphins used highly-developed communication patterns to escape predators This is what paragraphs 2-4 do. Right.
D. explaining how dolphins communicate and behave in groups This is explained but is not the main concern, is a consecuence of it. Wrong.
E. providing an in-depth analysis of a disputed claim There is no disputed claim mentioned in the passage, there is no in-depth review neither. Wrong.
The passage suggests that postural pointing provides evidence of a dolphin’s ability to:
A. mimic a similar human action Not really, that is not an action neither is mimed. Wrong.
B. learn by listening to the clicks made by other dolphins Learn may not be the best word but means "notice", "get information" here. This is just what the research is trying to prove. Right.
C. comprehend visual cues such as light and shadow No mention of ligh or shadows here, we are talking of waves and sounds!. Wrong.
D. respond more intelligently to auditory cues than do other cetaceans There is no mention about the response or intelligence of this "feature". Wrong.
E. rapidly react to perceived threats This would be rapid communication, it is a trap. Wrong.
Regards,
Pablo
04 Apr 2020, 08:10
Kudos
Bookmarks
1) The answer can be found from line 3 of the 2nd paragraph.
A) Clicks would allow dolphins to find out information about their underwater surroundings through echolocation thus allowing them to navigate underwater obstacles. Correct.
A dolphin would use whistles to perform all the other activities outlined in the choices instead of clicks. So all the other choices are Incorrect.
2)
A) We have not been told about how dolphins go about locating their food. Incorrect.
B) In the last paragraph, the passage talks about how dolphins respond to predators such as sharks. This is a situation which would require dolphins to communicate rapidly. Correct.
C) This is party correct but when compared to choice B, choice B is more precise because it explains why dolphins would need to quickly establish relationships with fellow dolphins. Incorrect
D) How dolphins hunt has not been discussed in the passage. Incorrect.
E) We are not told how dolphins behave when other cetaceans, whales and porpoises, are around. Incorrect.
3) The answer can be gotten from paragraph 3, line 1: The level of sophistication of an animal’s communication system provides insight into its level of intelligence. Therefore, if the another animal does not have a communication system as advanced as that of a dolphin then it can be considered less intelligent than a dolphin. E) comes to the same conclusion.
4)
A) A comparison of communication has not been done in this paragraph. Incorrect.
B) No abstract idea that needs simplification has been defined in this paragraph. Incorrect.
C) This is the main function of the first paragraph. It is the introductory paragraph of the passage. It does this by starting from a general view of all cetaceans then focusing on dolphins. Correct.
D) No explanations of any event have been done in this paragraph. Incorrect.
E) No mistakes or consequences of any kind have been discussed in this paragraph. Incorrect.
5)
A) No clear characteristic comparisons have been outlined in the passage between dolphins and other cetaceans. Incorrect.
B) The term ‘cetacean intelligence’ has not been explicitly defined. In addition, the passage is concerned with only dolphins and not cetaceans as a whole. Incorrect.
C) Partial out of scope. This has only been covered in the last paragraph. Incorrect.
D) This answer covers the general scope of the passage. Each paragraph after the introductory first paragraph explains how dolphins use clicks and whistles to move and communicate and specific applicable scenarios that dolphins use these clicks and whistles e.g. escaping a predator, echolocation, acoustic flashlight. Correct.
E) No disputed claim has been outlined in the passage. Incorrect.
6) The answer can be gotten from the 3rd paragraph since this is where postural pointing has been mentioned. The bone of contention is between choice A and B. Choice B is more specific because it goes into detail of how do dolphins actually mimic similar human actions hence choice B is the answer.
A) Clicks would allow dolphins to find out information about their underwater surroundings through echolocation thus allowing them to navigate underwater obstacles. Correct.
A dolphin would use whistles to perform all the other activities outlined in the choices instead of clicks. So all the other choices are Incorrect.
2)
A) We have not been told about how dolphins go about locating their food. Incorrect.
B) In the last paragraph, the passage talks about how dolphins respond to predators such as sharks. This is a situation which would require dolphins to communicate rapidly. Correct.
C) This is party correct but when compared to choice B, choice B is more precise because it explains why dolphins would need to quickly establish relationships with fellow dolphins. Incorrect
D) How dolphins hunt has not been discussed in the passage. Incorrect.
E) We are not told how dolphins behave when other cetaceans, whales and porpoises, are around. Incorrect.
3) The answer can be gotten from paragraph 3, line 1: The level of sophistication of an animal’s communication system provides insight into its level of intelligence. Therefore, if the another animal does not have a communication system as advanced as that of a dolphin then it can be considered less intelligent than a dolphin. E) comes to the same conclusion.
4)
A) A comparison of communication has not been done in this paragraph. Incorrect.
B) No abstract idea that needs simplification has been defined in this paragraph. Incorrect.
C) This is the main function of the first paragraph. It is the introductory paragraph of the passage. It does this by starting from a general view of all cetaceans then focusing on dolphins. Correct.
D) No explanations of any event have been done in this paragraph. Incorrect.
E) No mistakes or consequences of any kind have been discussed in this paragraph. Incorrect.
5)
A) No clear characteristic comparisons have been outlined in the passage between dolphins and other cetaceans. Incorrect.
B) The term ‘cetacean intelligence’ has not been explicitly defined. In addition, the passage is concerned with only dolphins and not cetaceans as a whole. Incorrect.
C) Partial out of scope. This has only been covered in the last paragraph. Incorrect.
D) This answer covers the general scope of the passage. Each paragraph after the introductory first paragraph explains how dolphins use clicks and whistles to move and communicate and specific applicable scenarios that dolphins use these clicks and whistles e.g. escaping a predator, echolocation, acoustic flashlight. Correct.
E) No disputed claim has been outlined in the passage. Incorrect.
6) The answer can be gotten from the 3rd paragraph since this is where postural pointing has been mentioned. The bone of contention is between choice A and B. Choice B is more specific because it goes into detail of how do dolphins actually mimic similar human actions hence choice B is the answer.
