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- Sun Jan 20, 2013 12:00 am
#27388
Complete Question Explanation
(See the complete passage discussion here: lsat/viewtopic.php?t=50)
The correct answer choice is (C)
This question stem asks for the answer choice that would be supported by all the theoretical approaches to LHB. This is similar to a Resolve the Paradox question from Logical Reasoning. The correct answer choice will provide a premise that is consistent with (that is, does not disagree with) all of the LHB theories, discussed in paragraph two of the passage.
Answer choice (A): Although the third group discussed in the passage apparently perceives the LHB as “brief,” this is somewhat vague. Besides, the other two theories don’t make any claims regarding how long the LHB lasted, so there is no way to know whether all theories are in agreement regarding its duration.
Answer choice (B): This answer choice is incorrect, because the third theory asserts that the debris came from within the Earth-Moon system, while the other two theories hold that it could have been an asteroid or comet.
Answer choice (C): This is the correct answer choice, since this assertion is consistent with the beliefs of all three groups of theorists discussed in the passage. All three theories hold that the Late Heavy Bombardment included heavy bombardment, and that the barrage decreased after the LHB, allowing life on Earth to flourish.
Answer choice (D): While all of the theories would agree that life could not have survived the LHB, there is nothing in the passage that suggests that any life existed on Earth to be destroyed by the LHB, so this answer choice is incorrect.
Answer choice (E): Since the author doesn’t discuss the amount of debris hypothesized by the various theories, there is no way to know, based on the passage, whether all three theories would agree on this issue, so this answer choice is incorrect.
(See the complete passage discussion here: lsat/viewtopic.php?t=50)
The correct answer choice is (C)
This question stem asks for the answer choice that would be supported by all the theoretical approaches to LHB. This is similar to a Resolve the Paradox question from Logical Reasoning. The correct answer choice will provide a premise that is consistent with (that is, does not disagree with) all of the LHB theories, discussed in paragraph two of the passage.
Answer choice (A): Although the third group discussed in the passage apparently perceives the LHB as “brief,” this is somewhat vague. Besides, the other two theories don’t make any claims regarding how long the LHB lasted, so there is no way to know whether all theories are in agreement regarding its duration.
Answer choice (B): This answer choice is incorrect, because the third theory asserts that the debris came from within the Earth-Moon system, while the other two theories hold that it could have been an asteroid or comet.
Answer choice (C): This is the correct answer choice, since this assertion is consistent with the beliefs of all three groups of theorists discussed in the passage. All three theories hold that the Late Heavy Bombardment included heavy bombardment, and that the barrage decreased after the LHB, allowing life on Earth to flourish.
Answer choice (D): While all of the theories would agree that life could not have survived the LHB, there is nothing in the passage that suggests that any life existed on Earth to be destroyed by the LHB, so this answer choice is incorrect.
Answer choice (E): Since the author doesn’t discuss the amount of debris hypothesized by the various theories, there is no way to know, based on the passage, whether all three theories would agree on this issue, so this answer choice is incorrect.