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16 Sep 2014, 01:59
Kudos
Bookmarks
Archaeologists should make greater use of satellite images in their search for Mayan ruins in the jungles of Guatemala. Though satellite photographs have proven unhelpful because of their inability to penetrate the dense tree canopy, infrared imaging translates heat signatures into distinct colors, making previously-undiscovered ruins visible.
The conclusion above is based on which of the following assumptions?
A. Archeologists in the field have not been able to discover many ruins because the jungle is impenetrable.
B. Archaeologists use both satellite technology and local folklore to theorize the location of ruins.
C. Archaeologists require special training in order to read maps produced by infrared imaging.
D. Satellite photography has not produced images of sufficient detail to locate ruins in the jungle.
E. Infrared imaging is helpful because the heat signature of ruin sites is different from the heat signature of the surrounding jungle.
The conclusion above is based on which of the following assumptions?
A. Archeologists in the field have not been able to discover many ruins because the jungle is impenetrable.
B. Archaeologists use both satellite technology and local folklore to theorize the location of ruins.
C. Archaeologists require special training in order to read maps produced by infrared imaging.
D. Satellite photography has not produced images of sufficient detail to locate ruins in the jungle.
E. Infrared imaging is helpful because the heat signature of ruin sites is different from the heat signature of the surrounding jungle.
16 Sep 2014, 01:59
Kudos
Bookmarks
Official Solution:
Archaeologists should make greater use of satellite images in their search for Mayan ruins in the jungles of Guatemala. Though satellite photographs have proven unhelpful because of their inability to penetrate the dense tree canopy, infrared imaging translates heat signatures into distinct colors, making previously-undiscovered ruins visible.
The conclusion above is based on which of the following assumptions?
A. Archeologists in the field have not been able to discover many ruins because the jungle is impenetrable.
B. Archaeologists use both satellite technology and local folklore to theorize the location of ruins.
C. Archaeologists require special training in order to read maps produced by infrared imaging.
D. Satellite photography has not produced images of sufficient detail to locate ruins in the jungle.
E. Infrared imaging is helpful because the heat signature of ruin sites is different from the heat signature of the surrounding jungle.
General Approach When faced with an assumption question in GMAT critical reasoning, the first step is to clearly identify the argument's conclusion and its supporting evidence. The conclusion here is that archaeologists should use satellite infrared imaging to locate Mayan ruins. The evidence supporting this conclusion is the fact that infrared imaging translates heat signatures into distinct colors, revealing ruins that were previously undiscovered. The assumption is the unstated logical link that holds the argument together; it's the statement that must be true in order for the conclusion to logically follow from the evidence.
Correct Answer Explanation Choice E states: Infrared imaging is helpful because the heat signature of ruin sites is different from the heat signature of the surrounding jungle. This statement is indeed an assumption that underpins the argument. In order for the infrared imaging to be effective in finding ruins (as the author concludes), it must be the case that the heat signatures of the ruins are distinguishable from those of the jungle. If not, the infrared imaging wouldn't help reveal the ruins. This assumption is unstated in the original argument, but is necessary for the conclusion to be valid, making E the correct answer.
Incorrect Answer Explanation
A) This choice is not relevant. The issue is not whether the jungle is physically impenetrable to archaeologists, but whether the ruins can be detected using certain technology.
B) This choice is also irrelevant. The argument doesn’t say anything about the use of local folklore in locating ruins.
C) This option is not an assumption made in the argument. Whether or not archaeologists require special training in order to read infrared image maps doesn't affect the conclusion that infrared imaging is a good tool for finding ruins.
D) This option is incorrect because the argument doesn't hinge on the level of detail provided by satellite photography. The argument is based on the idea that satellite photography can't penetrate the tree canopy, not that it lacks detail.
Answer: E
Archaeologists should make greater use of satellite images in their search for Mayan ruins in the jungles of Guatemala. Though satellite photographs have proven unhelpful because of their inability to penetrate the dense tree canopy, infrared imaging translates heat signatures into distinct colors, making previously-undiscovered ruins visible.
The conclusion above is based on which of the following assumptions?
A. Archeologists in the field have not been able to discover many ruins because the jungle is impenetrable.
B. Archaeologists use both satellite technology and local folklore to theorize the location of ruins.
C. Archaeologists require special training in order to read maps produced by infrared imaging.
D. Satellite photography has not produced images of sufficient detail to locate ruins in the jungle.
E. Infrared imaging is helpful because the heat signature of ruin sites is different from the heat signature of the surrounding jungle.
General Approach When faced with an assumption question in GMAT critical reasoning, the first step is to clearly identify the argument's conclusion and its supporting evidence. The conclusion here is that archaeologists should use satellite infrared imaging to locate Mayan ruins. The evidence supporting this conclusion is the fact that infrared imaging translates heat signatures into distinct colors, revealing ruins that were previously undiscovered. The assumption is the unstated logical link that holds the argument together; it's the statement that must be true in order for the conclusion to logically follow from the evidence.
Correct Answer Explanation Choice E states: Infrared imaging is helpful because the heat signature of ruin sites is different from the heat signature of the surrounding jungle. This statement is indeed an assumption that underpins the argument. In order for the infrared imaging to be effective in finding ruins (as the author concludes), it must be the case that the heat signatures of the ruins are distinguishable from those of the jungle. If not, the infrared imaging wouldn't help reveal the ruins. This assumption is unstated in the original argument, but is necessary for the conclusion to be valid, making E the correct answer.
Incorrect Answer Explanation
A) This choice is not relevant. The issue is not whether the jungle is physically impenetrable to archaeologists, but whether the ruins can be detected using certain technology.
B) This choice is also irrelevant. The argument doesn’t say anything about the use of local folklore in locating ruins.
C) This option is not an assumption made in the argument. Whether or not archaeologists require special training in order to read infrared image maps doesn't affect the conclusion that infrared imaging is a good tool for finding ruins.
D) This option is incorrect because the argument doesn't hinge on the level of detail provided by satellite photography. The argument is based on the idea that satellite photography can't penetrate the tree canopy, not that it lacks detail.
Answer: E
05 Jan 2016, 04:35
Kudos
Bookmarks
Hi Bunuel ,
As its an assumption question, so we need to find an answer which makes the conclusion STRONG.
Conclusion:- Archaeologists should make greater use of satellite images in their search for Mayan ruins in the jungles of Guatemala.
Additional information provided-
Archaeologist also have Infrared imaging technique, which translates heat signatures into distinct colors, making previously-undiscovered ruins visible.
But still conclusion states that Archaeologists should make greater use of satellite images
Paraphrasing this question-
Infrared imaging translates heat signatures into distinct colors, making previously-undiscovered ruins visible.
Satellite images have proven unhelpful because of their inability to penetrate the dense tree canopy.
GAP______________________________________________ GAP
Conclusion- Archaeologists should make greater use of satellite images in their search for Mayan ruins in the jungles of Guatemala.
So, we need to find a point which makes Infrared imaging less likely to be used "In search for Mayan ruins in the jungles of Guatemala"
Only 2 option talks about infrared imaging i.e C and E.
Scenario 1:
Infrared imaging translates heat signatures into distinct colors, making previously-undiscovered ruins visible.
Satellite images have proven unhelpful because of their inability to penetrate the dense tree canopy.
GAP____Archaeologists require special training in order to read maps produced by infrared imaging_________ GAP
Conclusion- Archaeologists should make greater use of satellite images in their search for Mayan ruins in the jungles of Guatemala.
Scenario 2:
Infrared imaging translates heat signatures into distinct colors, making previously-undiscovered ruins visible.
Satellite images have proven unhelpful because of their inability to penetrate the dense tree canopy.
GAP___Infrared imaging is helpful because the heat signature of ruin sites is different from the heat signature of the surrounding jungle_______ GAP
Conclusion- Archaeologists should make greater use of satellite images in their search for Mayan ruins in the jungles of Guatemala.
Scenario 1 makes more sense.
IMO- C should be the answer.
Can you please tell what's wrong in my reasoning...??
Please share your thought.
Thanks in advance
As its an assumption question, so we need to find an answer which makes the conclusion STRONG.
Conclusion:- Archaeologists should make greater use of satellite images in their search for Mayan ruins in the jungles of Guatemala.
Additional information provided-
Archaeologist also have Infrared imaging technique, which translates heat signatures into distinct colors, making previously-undiscovered ruins visible.
But still conclusion states that Archaeologists should make greater use of satellite images
Paraphrasing this question-
Infrared imaging translates heat signatures into distinct colors, making previously-undiscovered ruins visible.
Satellite images have proven unhelpful because of their inability to penetrate the dense tree canopy.
GAP______________________________________________ GAP
Conclusion- Archaeologists should make greater use of satellite images in their search for Mayan ruins in the jungles of Guatemala.
So, we need to find a point which makes Infrared imaging less likely to be used "In search for Mayan ruins in the jungles of Guatemala"
Only 2 option talks about infrared imaging i.e C and E.
Scenario 1:
Infrared imaging translates heat signatures into distinct colors, making previously-undiscovered ruins visible.
Satellite images have proven unhelpful because of their inability to penetrate the dense tree canopy.
GAP____Archaeologists require special training in order to read maps produced by infrared imaging_________ GAP
Conclusion- Archaeologists should make greater use of satellite images in their search for Mayan ruins in the jungles of Guatemala.
Scenario 2:
Infrared imaging translates heat signatures into distinct colors, making previously-undiscovered ruins visible.
Satellite images have proven unhelpful because of their inability to penetrate the dense tree canopy.
GAP___Infrared imaging is helpful because the heat signature of ruin sites is different from the heat signature of the surrounding jungle_______ GAP
Conclusion- Archaeologists should make greater use of satellite images in their search for Mayan ruins in the jungles of Guatemala.
Scenario 1 makes more sense.
IMO- C should be the answer.
Can you please tell what's wrong in my reasoning...??
Please share your thought.
Thanks in advance
