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10 Apr 2025, 00:30
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
63% (01:52) correct
38%
(02:11)
wrong
based on 384
sessions
History
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Not Attempted Yet
Dolphins can swim at high speeds and achieve high acceleration in the water. In 1936, Sir James Gray calculated the force dolphins should be able to exert based on their physiology. He concluded that the propulsive force they were able to exert was not enough to explain how fast they swim and accelerate. In the 2000s, experimenters used special computer-enhanced measurements of the water in which dolphins were swimming. Through mathematical modeling, they were able to measure the force dolphins exert with their tails. As it turns out, dolphins exert considerably more force with their tails than Sir James Gray or anybody else ever expected. Therefore, the force exerted by their tails easily explains how fast they swim and accelerate.
In the argument, the two portions in boldface play which of the following roles?
(A) This first is a piece of evidence supporting the main conclusion; the second is the main conclusion.
(B) The first is a false conclusion based on an incorrect premise; the second is the revised conclusion drawn from the corrected premise.
(C) The first is an opinion the author seeks to refute; the second is the opinion the author supports.
(D) The first is a prediction that, if accurate, would provide support for the main conclusion of the argument; the second is the main conclusion.
(E) The first is a generally held assumption; the second is a conclusion that violates that assumption.
In the argument, the two portions in boldface play which of the following roles?
(A) This first is a piece of evidence supporting the main conclusion; the second is the main conclusion.
(B) The first is a false conclusion based on an incorrect premise; the second is the revised conclusion drawn from the corrected premise.
(C) The first is an opinion the author seeks to refute; the second is the opinion the author supports.
(D) The first is a prediction that, if accurate, would provide support for the main conclusion of the argument; the second is the main conclusion.
(E) The first is a generally held assumption; the second is a conclusion that violates that assumption.
10 Apr 2025, 12:12
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Bunuel
In 1936, a calculation was done by Sir James Gray on the force exerted by dolphins based on their physiology. The FIRST BF statement BF1 - the propulsive force that dolphins generated was not sufficient to explain the reasons for their speed.
After nearly 7 decades, with advanced technology and equipments they found out that - BF2 - dolphins exert more force with their tails than ever expected by Sir James Gray.
So, it’s clear that both BF1 and BF2 do not contradict each other. And BF2 were upgraded findings compared to BF1.
Let’s see the options and eliminate one by one.
(C) The first is an opinion the author seeks to refute; the second is the opinion the author supports.
BF1 is not an opinion. But, it is a conclusion based on some scientific research. Moreover, both BF stmts do not contradict. Hence, eliminating option C.
(D) The first is a prediction that, if accurate, would provide support for the main conclusion of the argument; the second is the main conclusion.
Prediction is made based on a belief or forecast on future events. As per the question stem, calculations were done and it’s concluded - so eliminating option D
(E) The first is a generally held assumption; the second is a conclusion that violates that assumption.
There is no assumption made, so out of scope.
let’s see the other two options
(A) This first is a piece of evidence supporting the main conclusion; the second is the main conclusion.
The second BF2 is a new finding.
(B) The first is a false conclusion based on an incorrect premise; the second is the revised conclusion drawn from the corrected premise.
This is the correct answer. Option B
10 Apr 2025, 21:15
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(A) The first is a piece of evidence supporting the main conclusion; the second is the main conclusion.
→ Incorrect. The first is not supporting the main conclusion — it's a contrasting opinion.
(B) The first is a false conclusion based on an incorrect premise; the second is the revised conclusion drawn from the corrected premise.
→ Tempting, but the author never explicitly claims Gray’s premise was wrong, just that new evidence shows a different reality.
(C) The first is an opinion the author seeks to refute; the second is the opinion the author supports.
→ This fits perfectly. Gray’s view is what the author refutes, and the second boldface is the view the author supports.
(D) The first is a prediction that, if accurate, would provide support for the main conclusion of the argument; the second is the main conclusion.
→ Incorrect. The first is a conclusion from the past, not a prediction.
(E) The first is a generally held assumption; the second is a conclusion that violates that assumption.
→ Also tempting, but the passage focuses on one researcher’s past conclusion, not a generally held assumption.
Correct Answer: C
→ Incorrect. The first is not supporting the main conclusion — it's a contrasting opinion.
(B) The first is a false conclusion based on an incorrect premise; the second is the revised conclusion drawn from the corrected premise.
→ Tempting, but the author never explicitly claims Gray’s premise was wrong, just that new evidence shows a different reality.
(C) The first is an opinion the author seeks to refute; the second is the opinion the author supports.
→ This fits perfectly. Gray’s view is what the author refutes, and the second boldface is the view the author supports.
(D) The first is a prediction that, if accurate, would provide support for the main conclusion of the argument; the second is the main conclusion.
→ Incorrect. The first is a conclusion from the past, not a prediction.
(E) The first is a generally held assumption; the second is a conclusion that violates that assumption.
→ Also tempting, but the passage focuses on one researcher’s past conclusion, not a generally held assumption.
Correct Answer: C
Bunuel
