GMAT CLUB OLYMPICS: David: Humans did not evolve from an aquatic ances

David: Humans did not evolve from an aquatic ancestor. Chimpanzees, our closest living relatives, share over 98 percent of our DNA, and they don’t swim or spend time in the water unless they have to. They even use leaves to soak up water to drink, rather than cup their hands.

Lynn: True, but we also have a layer of fat under our skin, which would make us unique in the animal kingdom as the only non-aquatic species that has evolved such fat, not to mention that fatty tissue is 90 percent as dense as water, helping us float and thereby conferring a survival advantage that would be useless outside of water.

Lynn responds to David’s argument by

(A) agreeing with him but adding counterarguments from opponents of that view.
(B) conceding that his evidence is valid but drawing attention to other evidence that refutes his argument.
(C) initially agreeing with him but then changing her mind by drawing upon comparisons.
(D) ignoring it and attacking the implications of his facts to support her counterargument.
(E) acknowledging the facts he uses to support his argument but offering additional information to consider without herself making a conclusion.

IMO E

Reasoning:-
1. Lynn agrees with David's evidence admitting that it is valid, but she does not agree with his argument. A eliminated
2. She admits that his evidence is valid and provides additional information, however she neither refutes nor accepts his argument.
3. There is no change of mind. She accepts his evidence but rejects his argument. C eliminated
4. She did not ignore David's statement. D eliminated

E is correct- she agrees with his facts but gives extra information without making any conclusion of her own.

(A) She does not cite counterarguments from opponents;
(B) correct, she agrees with his evidence, but she also adds other facts useful to refute his argument;
(C) she does not come up with comparisons;
(D) she neither ignore nor attack his argument;
(E) she indirectly make a conclusion, refuting his argument.

Lynn responds to David’s argument by saying True first, (agreeing that David's evidence is valid but draws attention to other facts such as 'but we also have a layer of fat under our skin, which would make us unique in the animal kingdom as the only non-aquatic species that has evolved such fat, not to mention that fatty tissue is 90 percent as dense as water, helping us float and thereby conferring a survival advantage that would be useless outside of water) thus refuting David's argument

(A) agreeing with him but adding counterarguments from opponents of that view. - Lynn doesn't add counterarguments from opponents of that view, Eliminate

(B) conceding that his evidence is valid but drawing attention to other evidence that refutes his argument. - Lynn concedes that David's evidence is valid but draws attention to other evidences that refutes his argument. - Correct

(C) initially agreeing with him but then changing her mind by drawing upon comparisons. - Lynn doesnt change her mind after agreeing with David, Eliminate

(D) ignoring it and attacking the implications of his facts to support her counterargument. - Lynn doesn't ignore or attack the implications of David's facts - Eliminate

(E) acknowledging the facts he uses to support his argument but offering additional information to consider without herself making a conclusion. - Lynn doesn't offer additional information to consider without herself making a conclusion - Eliminate

Answer : B

David: Humans did not evolve from an aquatic ancestor. Chimpanzees, our closest living relatives, share over 98 percent of our DNA, and they don’t swim or spend time in the water unless they have to. They even use leaves to soak up water to drink, rather than cup their hands.

Lynn: True, but we also have a layer of fat under our skin, which would make us unique in the animal kingdom as the only non-aquatic species that has evolved such fat, not to mention that fatty tissue is 90 percent as dense as water, helping us float and thereby conferring a survival advantage that would be useless outside of water.

Lynn responds to David’s argument by

(A) agreeing with him but adding counterarguments from opponents of that view. - Incorrect lynn has not added any counterarguments.
(B) conceding that his evidence is valid but drawing attention to other evidence that refutes his argument. Incorrect Lynn has accepted david comments but didn't refute it.
(C) initially agreeing with him but then changing her mind by drawing upon comparisons. Incorrect Lynn has accepted david comments but providing add on info regarding but it didn't make any comparison which changed her mind
(D) ignoring it and attacking the implications of his facts to support her counterargument. Incorrect Lynn has not ignored and attacked any implications of david, but providing additional information.
(E) acknowledging the facts he uses to support his argument but offering additional information to consider without herself making a conclusion. Correct

IMO-E

David: Humans did not evolve from an aquatic ancestor. Chimpanzees, our closest living relatives, share over 98 percent of our DNA, and they don’t swim or spend time in the water unless they have to. They even use leaves to soak up water to drink, rather than cup their hands.

Lynn: True, but we also have a layer of fat under our skin, which would make us unique in the animal kingdom as the only non-aquatic species that has evolved such fat, not to mention that fatty tissue is 90 percent as dense as water, helping us float and thereby conferring a survival advantage that would be useless outside of water.

David makes a claim, and then gives evidence to support it.
Lynn agrees to the argument but introduces another evidence that may actually be going against the claim of David.

Lynn responds to David’s argument by

(A) agreeing with him but adding counterarguments from opponents of that view.
Lynn introduces an evidence. Incorrect

(B) conceding that his evidence is valid but drawing attention to other evidence that refutes his argument.
Can easily be the correct answer, if a better option was not there.
Only thing we can say against the option is ‘refuting’.

(C) initially agreeing with him but then changing her mind by drawing upon comparisons.
There is no change of thought involved

(D) ignoring it and attacking the implications of his facts to support her counterargument.
Lynn never ignores David’s argument.

(E) acknowledging the facts he uses to support his argument but offering additional information to consider without herself making a conclusion.
Both produce facts/evidence/information. No conclusion by Lynn. CORRECT


E

David: Humans did not evolve from an aquatic ancestor. Chimpanzees, our closest living relatives, share over 98 percent of our DNA, and they don’t swim or spend time in the water unless they have to. They even use leaves to soak up water to drink, rather than cup their hands.

Lynn: True, but we also have a layer of fat under our skin, which would make us unique in the animal kingdom as the only non-aquatic species that has evolved such fat, not to mention that fatty tissue is 90 percent as dense as water, helping us float and thereby conferring a survival advantage that would be useless outside of water.

Lynn has responded by providing additional evidence, which counter the David's conclusion

Lynn responds to David’s argument by

(A) agreeing with him but adding counterarguments from opponents of that view.
- Lynn has agreed with the logic but not with conclusion

(B) conceding that his evidence is valid but drawing attention to other evidence that refutes his argument.
- She admitted that his evidence is valid but presented the additional information that counter the conclusion of David
- CORRECT

(C) initially agreeing with him but then changing her mind by drawing upon comparisons.
- no evidence presented suggest that she changed her mind

(D) ignoring it and attacking the implications of his facts to support her counterargument.
- she has not ignored the fact rather acknowledged it

(E) acknowledging the facts he uses to support his argument but offering additional information to consider without herself making a conclusion.
- she has implicitly refuted the argument/conclusion put up by David

Correct Option : E


David:
- Humans did not evolve from an aquatic ancestor.
- Chimpanzees, our closest living relatives, share over 98 percent of our DNA, and they don’t swim or spend time in the water unless they have to.
- They even use leaves to soak up water to drink, rather than cup their hands.

Lynn: True, but
- we also have a layer of fat under our skin,
- which would make us unique in the animal kingdom as the only non-aquatic species
that has evolved such fat,
not to mention that fatty tissue is 90 percent as dense as water,
helping us float and thereby conferring a survival advantage
that would be useless outside of water.


(E) acknowledging the facts
- (David : Humans did not evolve from an aquatic ancestor)

he uses to support his argument
(Lynn: make us unique in the animal kingdom as the only non-aquatic species)

but offering additional information to consider without herself making a conclusion.
(Lynn :
fat,
not to mention that fatty tissue is 90 percent as dense as water,
helping us float and thereby conferring a survival advantage
that would be useless outside of water)

Posted from my mobile device

I like how Lynn responds to David’s argument.
No argument, no dispute, no drama, no evident opposing conclusion.
Simply leaving him among facts. True professional.

David started with his conclusion: Humans did not evolve from an aquatic ancestor.
What he next offered is a human trait similar to that of non-aquatic animal: DNA

(A) agreeing with him but adding counterarguments from opponents of that view.

As we have alredy discussed above Lynn doesn’t bring any counterargument. There is nothing in her speech told against what David says.

(B) conceding that his evidence is valid but drawing attention to other evidence that refutes his argument.

The fact that people have a certain type of fat doesn’t necessarily refute the claim that we never lived under water. It simply adds another evidence that must be into equation.

(C) initially agreeing with him but then changing her mind by drawing upon comparisons.

Again, she didn’t change her mind. She simply agreed to the fact that people have similarities with chimpanzees. She didn’t say anything against that.

(D) ignoring it and attacking the implications of his facts to support her counterargument.

“ignoring” and “attacking” have nothing to do with Lynn said. She dais “true”, so she didn’t ignore him.

(E) acknowledging the facts he uses to support his argument but offering additional information to consider without herself making a conclusion.

Correct choice. What Lynn offers is another human trait that non-aquatic animals lack in: fatty tissue, 90 percent as dense as water
Also note that Lynn starts with “true”.
So Lynn acknowledges that chimpanzees have something to do with humans.
But still she shows that we have a trait that would help us not sink.
Keeping this in mind, let’s move to choices.

So E
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David: Humans did not evolve from an aquatic ancestor. Chimpanzees, our closest living relatives, share over 98 percent of our DNA, and they don’t swim or spend time in the water unless they have to. They even use leaves to soak up water to drink, rather than cup their hands.

Lynn: True, but we also have a layer of fat under our skin, which would make us unique in the animal kingdom as the only non-aquatic species that has evolved such fat, not to mention that fatty tissue is 90 percent as dense as water, helping us float and thereby conferring a survival advantage that would be useless outside of water.

Lynn responds to David’s argument by

(A) agreeing with him but adding counterarguments from opponents of that view.
-> She is not presenting views of others (opponents)
(B) conceding that his evidence is valid but drawing attention to other evidence that refutes his argument.
-> She does agree with him but the evidence she offers does not refute his argument which is focused on features of Chimpanzees.
(C) initially agreeing with him but then changing her mind by drawing upon comparisons.
-> Not true. These are two independent activities and no implication on each other.
(D) ignoring it and attacking the implications of his facts to support her counterargument.
-> Not true - she does not ignore his argument.
(E) acknowledging the facts he uses to support his argument but offering additional information to consider without herself making a conclusion.
-> She does acknowledge that the facts he presents are true, but she offers additional information about human features and presents a view - why would we have such a survival advantage that is useless outside of water? It implies a correlation to being aquatic but she does not make a conclusive statement saying the same or agreeing.

I'll go with E

(A) agreeing with him but adding counterarguments from opponents of that view. -- Lynn did not agree
(B) conceding that his evidence is valid but drawing attention to other evidence that refutes his argument. -- Lynn did not concede that his evidence is valid.
(C) initially agreeing with him but then changing her mind by drawing upon comparisons. --Lynn did not agree with David
(D) ignoring it and attacking the implications of his facts to support her counterargument. --Lynn did not ignore David's statements nor did she attack the implications of his facts
(E) acknowledging the facts he uses to support his argument but offering additional information to consider without herself making a conclusion. -- This is correct.

Lynn responds to David’s argument by

1. acknowledges David points
2. Add further information
3. No conclusion but tends to refute david conclusion. - by saying but

(A) agreeingwith him but adding counterarguments from opponents of that view.
no opposition but additional arguments.

(B) conceding that his evidence is valid but drawing attention to other evidence that refutes his argument.
She tends to refute with her last statement.

(C) initially agreeing with him but then changing her mind by drawing upon comparisons.
wrong: not change of mind but adding additiona linformation without disputing his evidence

(D) ignoring it and attacking the implications of his facts to support her counterargument.
not against his facts but just add further information

(E) acknowledging the facts he uses to support his argument but offering additional information to consider without herself making a conclusion.
She just didn;t add additioanl evidence to let it open to assume but by emphasis surviving advantage, she tends to refute david conclusion.

Between B and E
I would choose B because message tends to refute the conclsuion but not just left in open to assume

Final answer: B

<fingers crossed>

Lynn first agrees with david, but then give evidence which provides other explanation too, But she is not concluding anything
Keeping this in mind lets look at the options.

(A) agreeing with him but adding counterarguments from opponents of that view.
First part is correct but
"counterarguments from opponents of that view" = > this we don't know whether there is some opponent and it is their view
Eliminate A

(B) conceding that his evidence is valid but drawing attention to other evidence that refutes his argument.
conceding means she is ignoring, but she is accepting the facts made by David,
Eliminate B.

(C) initially agreeing with him but then changing her mind by drawing upon comparisons.
No, She is not changing her mind, she is agreeing with him and then gives evidence that refutes his argument
Eliminate C

(D) ignoring it and attacking the implications of his facts to support her counterargument.
She did not ignore david's argument, Eliminate D

(E) acknowledging the facts he uses to support his argument but offering additional information to consider without herself making a conclusion.
Yes, This option covers all our analysis made in the starting
She acknowledge the facts made by David, but offer additional information to consider, and she is not concluding anything. Correct

Hence IMO E.

(A) agreeing with him but adding counterarguments from opponents of that view.
REJECTED - Lynn does not agree with David. She merely admits that what he said is true. She does not add counter arguments - she brings about additional evidence and inferences.

(B) conceding that his evidence is valid but drawing attention to other evidence that refutes his argument.
REJECTED - Lynn does not concede that David's evidence is valid. She merely admits that what he said is true.
She brings about additional evidence and inferences - that can make him reconsider his position.

(C) initially agreeing with him but then changing her mind by drawing upon comparisons.
REJECTED - Lynn does not agree with David. She does no change her mind.

(D) ignoring it and attacking the implications of his facts to support her counterargument.
REJECTED - She does not ignore the facts he stated.

(E) acknowledging the facts he uses to support his argument but offering additional information to consider without herself making a conclusion
RIGHT ANSWER - 'True' acknowledges the facts David Quoted.
She offers additional information - and leaves it to David to consider the additional evidece she has offered.

David: Humans did not evolve from an aquatic ancestor. Chimpanzees, our closest living relatives, share over 98 percent of our DNA, and they don’t swim or spend time in the water unless they have to. They even use leaves to soak up water to drink, rather than cup their hands.

Lynn: True, but we also have a layer of fat under our skin, which would make us unique in the animal kingdom as the only non-aquatic species that has evolved such fat, not to mention that fatty tissue is 90 percent as dense as water, helping us float and thereby conferring a survival advantage that would be useless outside of water.

Lynn responds to David’s argument by

(A) agreeing with him but adding counterarguments from opponents of that view. Incorrect

he is not adding counterarguments but some counter evidence

(B) conceding that his evidence is valid but drawing attention to other evidence that refutes his argument. Correct

(C) initially agreeing with him but then changing her mind by drawing upon comparisons. Incorrect

he is not compare

(D) ignoring it and attacking the implications of his facts to support her counterargument. Incorrect

he is not attacking

(E) acknowledging the facts he uses to support his argument but offering additional information to consider without herself making a conclusion. Incorrect

but lynn is agree with David at first
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IMO C

David: Humans did not evolve from an aquatic ancestor. Chimpanzees, our closest living relatives, share over 98 percent of our DNA, and they don’t swim or spend time in the water unless they have to. They even use leaves to soak up water to drink, rather than cup their hands.

Lynn: True, but we also have a layer of fat under our skin, which would make us unique in the animal kingdom as the only non-aquatic species that has evolved such fat, not to mention that fatty tissue is 90 percent as dense as water, helping us float and thereby conferring a survival advantage that would be useless outside of water.

Lynn responds to David’s argument by

(A) agreeing with him but adding counterarguments from opponents of that view. Didn't agree with David. only agreed with the evidence he put forward
(B) conceding that his evidence is valid but drawing attention to other evidence that refutes his argument. correct

(C) initially agreeing with him but then changing her mind by drawing upon comparisons. Didn't agree with David. only agreed with the evidence he put forward
(D) ignoring it and attacking the implications of his facts to support her counterargument. Didn't ignore it
(E) acknowledging the facts he uses to support his argument but offering additional information to consider without herself making a conclusion. She definitely made a conclusion

A - incorrect. She doesn't add arguments stating we didn't evolve from chimpanzees.

B - Correct. She does provide evidence that perhaps we have some evolutionary traits from aquatic species that make us unique.

C - Incorrect - she doesn't change her mind.

D - She does acknowledge what he has to say, and she doesn't attack him.

E - Incorrect - she does make a conclusion.

Posted from my mobile device

(A) agreeing with him but adding counterarguments from opponents of that view. - There are no other opponents apart from these two!
(B) conceding that his evidence is valid but drawing attention to other evidence that refutes his argument. - Yes, Lynn brings in evidence that refutes David's argument by stating us humans are unique in the animal kingdom!
(C) initially agreeing with him but then changing her mind by drawing upon comparisons. - She never changed her mind which is clearly confirmed with the usage of the word 'but'.
(D) ignoring it and attacking the implications of his facts to support her counterargument. - Lynn never ignored the David's argument!
(E) acknowledging the facts he uses to support his argument but offering additional information to consider without herself making a conclusion. - This is close but she does conclude in the end by stating 'thereby conferring a survival advantage that would be useless outside of water.'

IMO, (B)!
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IMO B

David: Humans did not evolve from an aquatic ancestor. Chimpanzees, our closest living relatives, share over 98 percent of our DNA, and they don’t swim or spend time in the water unless they have to. They even use leaves to soak up water to drink, rather than cup their hands.

Lynn: True, but we also have a layer of fat under our skin, which would make us unique in the animal kingdom as the only non-aquatic species that has evolved such fat, not to mention that fatty tissue is 90 percent as dense as water, helping us float and thereby conferring a survival advantage that would be useless outside of water.

Lynn responds to David’s argument by

(A) agreeing with him but adding counterarguments from opponents of that view. Didn't agree with David. only agreed with the evidence he put forward
(B) conceding that his evidence is valid but drawing attention to other evidence that refutes his argument. correct

(C) initially agreeing with him but then changing her mind by drawing upon comparisons. Didn't agree with David. only agreed with the evidence he put forward
(D) ignoring it and attacking the implications of his facts to support her counterargument. Didn't ignore it
(E) acknowledging the facts he uses to support his argument but offering additional information to consider without herself making a conclusion. She definitely made a conclusion

Official Explanation (OE) from AndrewN is posted HERE.
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