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Two centuries ago, Tufe Peninsula became separated form the mainland,

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Two centuries ago, Tufe Peninsula became separated form the mainland, [#permalink]

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Two centuries ago, Tufe Peninsula became separated form the mainland, isolating on the newly formed Tufe Island a population of Turfil sunflowers. This population’s descendants grow to be, on average, 40 centimeters shorter than Turfil sunflowers found on the mainland. Tufe Island is significantly drier than Tufe Peninsula was. So the current average height of Tufe’s Turfil sunflowers is undoubtedly at least partially attributable to changes in Tufe’s environmental conditions.

Which of the following is an assumption on which the argument depends?

(A) There are no types of vegetation on Tufe Island that are known to benefit from dry conditions.

(B) There were about as many Turfil sunflowers on Tufe Peninsula two centuries ago as there are on Tufe Island today.

(C) The mainland’s environment has not changed in ways that have resulted in Turfil sunflowers on the mainland growing to be 40 centimeters taller than they did two centuries ago.

(D) The soil on Tufe Island, unlike that on the mainland, lacks important nutrients that help Turfil sunflowers survive and grow tall in a dry environment.

(E) The 40-centimeter height difference between the Turfil sunflowers on Tufe Island and those on the mainland is the only difference between the two populations.
[Reveal] Spoiler: OA

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Last edited by hazelnut on 19 Oct 2017, 07:22, edited 2 times in total.
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Re: Two centuries ago, Tufe Peninsula became separated form the mainland, [#permalink]

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New post 09 Jun 2007, 21:37
vote for C.

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Re: Two centuries ago, Tufe Peninsula became separated form the mainland, [#permalink]

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New post 09 Jun 2007, 21:51
Two centuries ago, Tufe Peninsula became separated form the mainland, isolating on the newly formed Tufe Island a population of Turfil sunflowers. This population’s descendants grow to be, on average, 40 centimeters shorter than Turfil sunflowers found on the mainland. Tufe Island is significantly drier than Tufe Peninsula was. So the current average height of Tufe’s Turfil sunflowers is undoubtedly at least partially attributable to changes in Tufe’s environmental conditions.

Which of the following is an assumption on which the argument depends?

A. There are no types of vegetation on Tufe Island that are known to benefit from dry conditions. out of scope
B. There were about as many Turfil sunflowers on Tufe Peninsula two centuries ago as there are on Tufe Island today. irrelvent
C. The mainland’s environment has not changed in ways that have resulted in Turfil sunflowers on the mainland growing to be 40 centimeters taller than they did two centuries ago. weakening the argument
D. The soil on Tufe Island, unlike that on the mainland, lacks important nutrients that help Turfil sunflowers survive and grow tall in a dry environment. irrelevant
E. The 40-centimeter height difference between the Turfil sunflowers on Tufe Island and those on the mainland is the only difference between the two populations.strenthening the conclusion so correct answer for me

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Re: Two centuries ago, Tufe Peninsula became separated form the mainland, [#permalink]

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New post 09 Jun 2007, 22:08
D.

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Re: Two centuries ago, Tufe Peninsula became separated form the mainland, [#permalink]

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New post 09 Jun 2007, 22:51
I'm going with C.

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Re: Two centuries ago, Tufe Peninsula became separated form the mainland, [#permalink]

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New post 10 Jun 2007, 00:20
At first glance I liked E but I think it is not correct because the author uses the word "partially" in his conclusion. So, I vote for D.

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Re: Two centuries ago, Tufe Peninsula became separated form the mainland, [#permalink]

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New post 10 Jun 2007, 06:14
conclusion: changes are attributable to Turfe's environmental changes

evidence1: sunflower 40cm shorter than on the mainland
evidence": Tufe Island is dryer than mainland was 200 years ago

assumption: only the island's climate has changed

A. irrelevant
B. irrelevant
C. The mainland’s environment has not changed, best answer
D. argument is about climate and not nutrients
E. can not be assumed

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Re: Two centuries ago, Tufe Peninsula became separated form the mainland, [#permalink]

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New post 10 Jun 2007, 08:06
I would go for 'C'.
This mentions the assumption that the height of the sunflowers at main island is NOT changed.
To compare the hight of the flowers from the both parts, we should make sure that the height of flowers on the mainland is NOT changed.

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Re: Two centuries ago, Tufe Peninsula became separated form the mainland, [#permalink]

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New post 10 Jun 2007, 10:15
im with C as well, when answering an assumption question, talking about things outside the scope of the question will be irrelevant. i.e. ( soil nutrients )

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Re: Two centuries ago, Tufe Peninsula became separated form the mainland, [#permalink]

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New post 10 Jun 2007, 18:42
The best answer is C

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Re: Two centuries ago, Tufe Peninsula became separated form the mainland, [#permalink]

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New post 10 Jun 2007, 23:11
I'll go for C. It tells us temperature should be the only critical factor here, and the control case (sunflowers on mainland) is a fair comparison.

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Re: Two centuries ago, Tufe Peninsula became separated form the mainland, [#permalink]

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New post 11 Jun 2007, 03:05
Facts
-Two centuries ago, Tufe Peninsula became separated form the mainland isolating on the newly formed Tufe Island a population of Turfil sunflowers
-This population’s descendants grow to be, on average, 40 centimeters shorter than Turfil sunflowers found on the mainland
-Tufe Island is significantly drier than Tufe Peninsula was
Conclusion
- So the current average height of Tufe’s Turfil sunflower is undoubtedly at least partially attributable to changes in Tufe’s environmental conditions

Now let's look at the options
A - Eliminate - Out of scope.
B - Eliminate - Out of scope.
D - Eliminate - More of a fact than an assumption.
E - Eliminate - More of a fact than an assumption.

C - Correct - Is an assumption - It says that the mainland’s environment has not changed so there is no change in the height of the Turfil sunflowers on the mainland. Hence the difference in the height is only due to the change in the island's environment.

This goes with the conclusion.

Hence C should be the answer.

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Re: Two centuries ago, Tufe Peninsula became separated form the mainland, [#permalink]

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Two centuries ago, Tufe Peninsula became separated form the mainland, isolating on the newly formed Tufe Island a population of Turfil sunflowers. This population’s descendants grow to be, on average, 40 centimeters shorter than Turfil sunflowers found on the mainland. Tufe Island is significantly drier than Tufe Peninsula was. So the current average height of Tufe’s Turfil sunflowers is undoubtedly at least partially attributable to changes in Tufe’s environmental conditions.

Which of the following is an assumption on which the argument depends?

(A) There are no types of vegetation on Tufe Island that are known to benefit from dry conditions.

(B) There were about as many Turfil sunflowers on Tufe Peninsula two centuries ago as there are on Tufe Island today.

(C) The mainland’s environment has not changed in ways that have resulted in Turfil sunflowers on the mainland growing to be 40 centimeters taller than they did two centuries ago.

(D) The soil on Tufe Island, unlike that on the mainland, lacks important nutrients that help Turfil sunflowers survive and grow tall in a dry environment.

(E) The 40-centimeter height difference between the Turfil sunflowers on Tufe Island and those on the mainland is the only difference between the two populations.

Last edited by hazelnut on 25 Jul 2017, 07:44, edited 1 time in total.
Formatted the Q and added OA

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Re: Two centuries ago, Tufe Peninsula became separated form the mainland, [#permalink]

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New post 12 Jan 2008, 10:30
marcodonzelli wrote:
Two centuries ago, Tufe Peninsula became separated form the mainland, isolating on the newly formed Tufe Island a population of Turfil sunflowers. This population’s descendants grow to be, on average, 40 centimeters shorter than Turfil sunflowers found on the mainland. Tufe Island is significantly drier than Tufe Peninsula was. So the current average height of Tufe’s Turfil sunflowers is undoubtedly at least partially attributable to changes in Tufe’s environmental conditions.
Which of the following is an assumption on which the argument depends?

A. There are no types of vegetation on Tufe Island that are known to benefit from dry conditions.
B. There were about as many Turfil sunflowers on Tufe Peninsula two centuries ago as there are on Tufe Island today.
C. The mainland’s environment has not changed in ways that have resulted in Turfil sunflowers on the mainland growing to be 40 centimeters taller than they did two centuries ago.
D. The soil on Tufe Island, unlike that on the mainland, lacks important nutrients that help Turfil sunflowers survive and grow tall in a dry environment.
E. The 40-centimeter height difference between the Turfil sunflowers on Tufe Island and those on the mainland is the only difference between the two populations.


All are irrelevant except C.

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Re: Two centuries ago, Tufe Peninsula became separated form the mainland, [#permalink]

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New post 12 Jan 2008, 10:51
GMATBLACKBELT wrote:
marcodonzelli wrote:
Two centuries ago, Tufe Peninsula became separated form the mainland, isolating on the newly formed Tufe Island a population of Turfil sunflowers. This population’s descendants grow to be, on average, 40 centimeters shorter than Turfil sunflowers found on the mainland. Tufe Island is significantly drier than Tufe Peninsula was. So the current average height of Tufe’s Turfil sunflowers is undoubtedly at least partially attributable to changes in Tufe’s environmental conditions.
Which of the following is an assumption on which the argument depends?

A. There are no types of vegetation on Tufe Island that are known to benefit from dry conditions.
B. There were about as many Turfil sunflowers on Tufe Peninsula two centuries ago as there are on Tufe Island today.
C. The mainland’s environment has not changed in ways that have resulted in Turfil sunflowers on the mainland growing to be 40 centimeters taller than they did two centuries ago.
D. The soil on Tufe Island, unlike that on the mainland, lacks important nutrients that help Turfil sunflowers survive and grow tall in a dry environment.
E. The 40-centimeter height difference between the Turfil sunflowers on Tufe Island and those on the mainland is the only difference between the two populations.


All are irrelevant except C.

yes, OA is C, although I was tricked by D...

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Re: Two centuries ago, Tufe Peninsula became separated form the mainland, [#permalink]

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New post 11 Aug 2008, 22:53
marcodonzelli wrote:
Two centuries ago, Tufe Peninsula became separated form the mainland, isolating on the newly formed Tufe Island a population of Turfil sunflowers. This population’s descendants grow to be, on average, 40 centimeters shorter than Turfil sunflowers found on the mainland. Tufe Island is significantly drier than Tufe Peninsula was. So the current average height of Tufe’s Turfil sunflowers is undoubtedly at least partially attributable to changes in Tufe’s environmental conditions.
Which of the following is an assumption on which the argument depends?

A. There are no types of vegetation on Tufe Island that are known to benefit from dry conditions.
-- Provide an example of environment factor
B. There were about as many Turfil sunflowers on Tufe Peninsula two centuries ago as there are on Tufe Island today.
-- Irrelevant
C. The mainland’s environment has not changed in ways that have resulted in Turfil sunflowers on the mainland growing to be 40 centimeters taller than they did two centuries ago.
-- Yes, if weather in mainland changed radically, there would be no bearing on environmental factors
D. The soil on Tufe Island, unlike that on the mainland, lacks important nutrients that help Turfil sunflowers survive and grow tall in a dry environment.
-- Provide an example of environment factor
E. The 40-centimeter height difference between the Turfil sunflowers on Tufe Island and those on the mainland is the only difference between the two populations.
-- Irrelevant

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Re: Two centuries ago, Tufe Peninsula became separated form the mainland, [#permalink]

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New post 11 Aug 2008, 23:48
marcodonzelli wrote:
Two centuries ago, Tufe Peninsula became separated form the mainland, isolating on the newly formed Tufe Island a population of Turfil sunflowers. This population’s descendants grow to be, on average, 40 centimeters shorter than Turfil sunflowers found on the mainland. Tufe Island is significantly drier than Tufe Peninsula was. So the current average height of Tufe’s Turfil sunflowers is undoubtedly at least partially attributable to changes in Tufe’s environmental conditions.
Which of the following is an assumption on which the argument depends?

A. There are no types of vegetation on Tufe Island that are known to benefit from dry conditions.
B. There were about as many Turfil sunflowers on Tufe Peninsula two centuries ago as there are on Tufe Island today.
C. The mainland’s environment has not changed in ways that have resulted in Turfil sunflowers on the mainland growing to be 40 centimeters taller than they did two centuries ago.
D. The soil on Tufe Island, unlike that on the mainland, lacks important nutrients that help Turfil sunflowers survive and grow tall in a dry environment.
E. The 40-centimeter height difference between the Turfil sunflowers on Tufe Island and those on the mainland is the only difference between the two populations.


A) -> out of place
B) -> Not related
C) -> In context, might be assumption
D) -> Not related
E) -> Not related

Will go with C)

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Re: Two centuries ago, Tufe Peninsula became separated form the mainland, [#permalink]

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Two centuries ago, Tufe Peninsula became separated form the mainland, isolating on the newly formed Tufe Island a population of Turfil sunflowers. This population’s descendants grow to be, on average, 40 centimeters shorter than Turfil sunflowers found on the mainland. Tufe Island is significantly drier than Tufe Peninsula was. So the current average height of Tufe’s Turfil sunflowers is undoubtedly at least partially attributable to changes in Tufe’s environmental conditions.

Which of the following is an assumption on which the argument depends?

A. There are no types of vegetation on Tufe Island that are known to benefit from dry conditions.
B. There were about as many Turfil sunflowers on Tufe Peninsula two centuries ago as there are on Tufe Island today.
C. The mainland’s environment has not changed in ways that have resulted in Turfil sunflowers on the mainland growing to be 40 centimeters taller than they did two centuries ago.
D. The soil on Tufe Island, unlike that on the mainland, lacks important nutrients that help Turfil sunflowers survive and grow tall in a dry environment.
E. The 40-centimeter height difference between the Turfil sunflowers on Tufe Island and those on the mainland is the only difference between the two populations.

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Re: Two centuries ago, Tufe Peninsula became separated form the mainland, [#permalink]

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sbsharma wrote:
Two centuries ago, Tufe Peninsula became separated form the mainland, isolating on the newly formed Tufe Island a population of Turfil sunflowers. This population’s descendants grow to be, on average, 40 centimeters shorter than Turfil sunflowers found on the mainland. Tufe Island is significantly drier than Tufe Peninsula was. So the current average height of Tufe’s Turfil sunflowers is undoubtedly at least partially attributable to changes in Tufe’s environmental conditions.

What are the things in this argument
X seperated from Y
H of flowers on X are 40 cms short than H of flowers on Y
Y is drier than X
Conclusion Dryness caused the height difference.

Assumption: No other factors affected Height. C
Which of the following is an assumption on which the argument depends?

A. There are no types of vegetation on Tufe Island that are known to benefit from dry conditions.
B. There were about as many Turfil sunflowers on Tufe Peninsula two centuries ago as there are on Tufe Island today.
C. The mainland’s environment has not changed in ways that have resulted in Turfil sunflowers on the mainland growing to be 40 centimeters taller than they did two centuries ago.
D. The soil on Tufe Island, unlike that on the mainland, lacks important nutrients that help Turfil sunflowers survive and grow tall in a dry environment.
E. The 40-centimeter height difference between the Turfil sunflowers on Tufe Island and those on the mainland is the only difference between the two populations.

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Re: Two centuries ago, Tufe Peninsula became separated form the mainland, [#permalink]

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BlueRobin wrote:
sbsharma wrote:
Two centuries ago, Tufe Peninsula became separated form the mainland, isolating on the newly formed Tufe Island a population of Turfil sunflowers. This population’s descendants grow to be, on average, 40 centimeters shorter than Turfil sunflowers found on the mainland. Tufe Island is significantly drier than Tufe Peninsula was. So the current average height of Tufe’s Turfil sunflowers is undoubtedly at least partially attributable to changes in Tufe’s environmental conditions.

What are the things in this argument
X seperated from Y
H of flowers on X are 40 cms short than H of flowers on Y
Y is drier than X
Conclusion Dryness caused the height difference.

Assumption: No other factors affected Height. C
Which of the following is an assumption on which the argument depends?

A. There are no types of vegetation on Tufe Island that are known to benefit from dry conditions.
B. There were about as many Turfil sunflowers on Tufe Peninsula two centuries ago as there are on Tufe Island today.
C. The mainland’s environment has not changed in ways that have resulted in Turfil sunflowers on the mainland growing to be 40 centimeters taller than they did two centuries ago.
D. The soil on Tufe Island, unlike that on the mainland, lacks important nutrients that help Turfil sunflowers survive and grow tall in a dry environment.
E. The 40-centimeter height difference between the Turfil sunflowers on Tufe Island and those on the mainland is the only difference between the two populations.



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Re: Two centuries ago, Tufe Peninsula became separated form the mainland,   [#permalink] 20 Jul 2010, 10:25

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