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The Eurasian ruffe, a fish species inadvertently introduced into North

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The Eurasian ruffe, a fish species inadvertently introduced into North [#permalink]

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The Official Guide for GMAT Review, 12th Edition, 2009

Practice Question
Question No.: CR 30
Page: 509

The Eurasian ruffe, a fish species inadvertently introduced into North America’s Great Lakes in recent years, feeds on the eggs of lake whitefish, a native species, thus threatening the lakes’ natural ecosystem. To help track the ruffe’s spread, government agencies have produced wallet-sized cards about the ruffe. The cards contain pictures of the ruffe and explain the danger they pose; the cards also request anglers to report any ruffe they catch.

Which of the following, if true, would provide most support for the prediction that the agencies’ action will have its intended effect?

(A) The ruffe has spiny fins that make it unattractive as prey.

(B) Ruffe generally feed at night, but most recreational fishing on the Great Lakes is done during daytime hours.

(C) Most people who fish recreationally on the Great Lakes are interested in the preservation of the lake whitefish because it is a highly prized game fish.

(D) The ruffe is one of several nonnative species in the Great Lakes whose existence threatens the survival of lake whitefish populations there.

(E) The bait that most people use when fishing for whitefish on the Great Lakes is not attractive to ruffe.
[Reveal] Spoiler: OA

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Last edited by hazelnut on 01 Nov 2017, 01:31, edited 2 times in total.
Edited the question.

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Re: The Eurasian ruffe, a fish species inadvertently introduced into North [#permalink]

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New post 15 Feb 2010, 05:50
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An explanation:

A) If ruffe are unattractive as prey, they will probably spread more quickly in the Great Lakes. This
will most likely have little effect on whether the wallet-sized cards will help government agencies
track the ruffe.

I don't understand why if ruffe are unattractive as prey, they will probably spread more quickly in the Great Lakes?

I'm waiting for your suggestions, guys!

P.S. The correct answer is C.
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Re: The Eurasian ruffe, a fish species inadvertently introduced into North [#permalink]

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aiglos wrote:
From OG12:

The Eurasian ruffe, a fish species inadvertently introduced into North America’s Great Lakes in recent years,
feeds on the eggs of lake whitefish, a native species, thus threatening the lakes’ natural ecosystem. To help
track the ruffe’s spread, government agencies have produced wallet-sized cards about the ruffe. The cards
contain pictures of the ruffe and explain the danger they pose; the cards also request anglers to report any ruffe
they catch.

Which of the following, if true, would provide most support for the prediction that the agencies’ action will have
its intended effect?

(A) The ruffe has spiny fins that make it unattractive as prey.>>> It does neither strengthens nor weakens the agency's action: OUT.
(B) Ruffe generally feed at night, but most recreational fi shing on the Great Lakes is done during daytime hours.>> Nothing has been said about day/night time fishing :OUT
(C) Most people who fish recreationally on the Great Lakes are interested in the preservation of the lake
whitefish because it is a highly prized game fish.>>>> People fish just for recreation and they might fish ruffe (people want to preserve the lake)after receiving the information from agency's actions : IN
(D) The ruffe is one of several nonnative species in the Great Lakes whose existence threatens the survival of
lake whitefish populations there.>>> Premise already given in the question.It does neither strengthens nor weakens the agency's action: OUT.
(E) The bait that most people use when fishing for whitefish on the Great Lakes is not attractive to ruffe.Additional Information.It does neither strengthens nor weakens the agency's action: OUT.


FINALLY C

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Re: The Eurasian ruffe, a fish species inadvertently introduced into North [#permalink]

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New post 29 Apr 2011, 08:46
aiglos wrote:
From OG12:

The Eurasian ruffe, a fish species inadvertently introduced into North America’s Great Lakes in recent years,
feeds on the eggs of lake whitefish, a native species, thus threatening the lakes’ natural ecosystem. To help
track the ruffe’s spread, government agencies have produced wallet-sized cards about the ruffe. The cards
contain pictures of the ruffe and explain the danger they pose; the cards also request anglers to report any ruffe
they catch.

Which of the following, if true, would provide most support for the prediction that the agencies’ action will have
its intended effect?

(A) The ruffe has spiny fins that make it unattractive as prey. --neutral.
(B) Ruffe generally feed at night, but most recreational fi shing on the Great Lakes is done during daytime hours.-- weakens.
(C) Most people who fi sh recreationally on the Great Lakes are interested in the preservation of the lake
whitefi sh because it is a highly prized game fish. -- IMO
(D) The ruffe is one of several nonnative species in the Great Lakes whose existence threatens the survival of
lake whitefish populations there. --neutral.
(E) The bait that most people use when fi shing for whitefi sh on the Great Lakes is not attractive to ruffe. -- weakens.

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Re: The Eurasian ruffe, a fish species inadvertently introduced into North [#permalink]

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gmatpunjabi wrote:
The Eurasian ruffe, a fish species inadvertently introduced into North America’s Great Lakes in recent years, feeds on the eggs of lake whitefish, a native species, thus threatening the lakes’ natural ecosystem. To help track the ruffe’s spread, government agencies have produced wallet-sized cards about the ruffe. The cards contain pictures of the ruffe and explain the danger they pose; the cards also request anglers to report any ruffe they catch.
Which of the following, if true, would provide most support for the prediction that the agencies’ action will have its intended effect?
A. The ruffe has spiny fins that make it unattractive as prey.
B. Ruffe generally feed at night, but most recreational fishing on the Great Lakes is done during daytime hours.
C. Most people who fish recreationally on the Great Lakes are interested in the preservation of the lake whitefish because it is a highly prized game fish.
D. The ruffe is one of several nonnative species in the Great Lakes whose existence threatens the survival of lake whitefish populations there.
E. The bait that most people use when fishing for whitefish on the Great Lakes is not attractive to ruffe.

WHat is the Conclusion in this CR question??


Look the sentences in red, the conclusion is implied: "The cards will help to track this fish".
In this case, we have to support that conclusion.

Hope it helps.
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Re: The Eurasian ruffe, a fish species inadvertently introduced into North [#permalink]

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Hi gmatpunjabi,

Here the correct answer is C (" Most people who fish recreationally on the Great Lakes are interested in the preservation of the lake whitefish because it is a highly prized game fish. " ) as it offers some support to the government program.
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Re: The Eurasian ruffe, a fish species inadvertently introduced into North [#permalink]

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New post 15 Feb 2012, 01:10
So the card will help the people in tracing the ruffles.
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Re: The Eurasian ruffe, a fish species inadvertently introduced into North [#permalink]

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New post 19 Feb 2012, 10:54
gmatpunjabi wrote:
The Eurasian ruffe, a fish species inadvertently introduced into North America’s Great Lakes in recent years, feeds on the eggs of lake whitefish, a native species, thus threatening the lakes’ natural ecosystem. To help track the ruffe’s spread, government agencies have produced wallet-sized cards about the ruffe. The cards contain pictures of the ruffe and explain the danger they pose; the cards also request anglers to report any ruffe they catch.
Which of the following, if true, would provide most support for the prediction that the agencies’ action will have its intended effect?
A. The ruffe has spiny fins that make it unattractive as prey.
B. Ruffe generally feed at night, but most recreational fishing on the Great Lakes is done during daytime hours.
C. Most people who fish recreationally on the Great Lakes are interested in the preservation of the lake whitefish because it is a highly prized game fish.
D. The ruffe is one of several nonnative species in the Great Lakes whose existence threatens the survival of lake whitefish populations there.
E. The bait that most people use when fishing for whitefish on the Great Lakes is not attractive to ruffe.

WHat is the Conclusion in this CR question??

I think the conclusion is given in the question.. the question asks "which of the following if true would provide most support for the PREDICTION THAT THE AGENCIES' ACTION WILL HAVE IT'S INTENDED EFFECT..."

The prediction is the conclusion IMO.. :)

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Re: The Eurasian ruffe, a fish species inadvertently introduced into North [#permalink]

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C is the answer .Here we need to find a reason for the anglers to report the catch of a raffe.It is correctly stated in C that since the anglers are interested in the whitefish they would surely report when a raffe is caught since the raffe is responsible for the reduction in whitefish population .
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Re: The Eurasian ruffe, a fish species inadvertently introduced into North [#permalink]

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"The Eurasian ruffe, a fish species inadvertently introduced into North America’s Great Lakes in recent years, feeds on the eggs of lake whitefish, a native species, thus threatening the lakes’ natural ecosystem."

I think this is the conclusion.

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Re: The Eurasian ruffe, a fish species inadvertently introduced into North [#permalink]

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New post 17 Sep 2014, 06:22
Although C is Appropriate Answer.

What is the flaw in E?

If the anglers use a bait which is not attractive to ruffe then surely they will not be able to catch Ruffe fish. However, after awareness generated by Govt. Agency regarding the dangers posed by ruffe. These anglers would likely change the Bait to something that attracts ruffe fish inorder to catch it.

The above reasoning is similar to Option C reasoning that after being aware of ..... anglers will start reporting ruffe catch to govt.

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Re: The Eurasian ruffe, a fish species inadvertently introduced into North [#permalink]

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New post 14 Jan 2015, 23:13
Main Point: Ruffs population is threatening whitefish -> government should control ruffs somehow so they create a card and urge people to report ruffs
Prove it: Choose a AC which will prove that card idea will work

A. features of ruffe fins...does nothing to prove
B. this weakens or out of focus
C. proves it that people fishing at lake will report ruffe because its a highly prized fish.
D. same premise as the argument
E. weakens or out of focus

Best Choice: C

aiglos wrote:
From OG12:

The Eurasian ruffe, a fish species inadvertently introduced into North America’s Great Lakes in recent years,
feeds on the eggs of lake whitefish, a native species, thus threatening the lakes’ natural ecosystem. To help
track the ruffe’s spread, government agencies have produced wallet-sized cards about the ruffe. The cards
contain pictures of the ruffe and explain the danger they pose; the cards also request anglers to report any ruffe
they catch.

Which of the following, if true, would provide most support for the prediction that the agencies’ action will have
its intended effect?

(A) The ruffe has spiny fins that make it unattractive as prey.
(B) Ruffe generally feed at night, but most recreational fi shing on the Great Lakes is done during daytime hours.
(C) Most people who fi sh recreationally on the Great Lakes are interested in the preservation of the lake
whitefi sh because it is a highly prized game fish.
(D) The ruffe is one of several nonnative species in the Great Lakes whose existence threatens the survival of
lake whitefish populations there.
(E) The bait that most people use when fi shing for whitefi sh on the Great Lakes is not attractive to ruffe.

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Re: The Eurasian ruffe, a fish species inadvertently introduced into North [#permalink]

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New post 15 Mar 2016, 00:33
We were being told again and again that GMAT is about tunnel vision. But that was exactly why I was trapped in this question.

In my notes, I highlighted "sights of ruffe" as keyword and "easiness in sighting ruffe" as possible answer. That led me to deleting C (we are talking about tracking ruffe, NOT how highly-prized whitefish can be). Consecutively, I crossed all answers off and got trapped for over 3 mins.

Is there any suggestion for further improvement in catching the right keyword?

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Re: The Eurasian ruffe, a fish species inadvertently introduced into North [#permalink]

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New post 07 Jul 2017, 02:02
in "plan" argument, we find some idea which can make the plan easy to do or hard to do. in so doing, we make an answer to strengthen and weaken questions.

above thinking is a prethinking process we do before going to answer choices. we know what we look for among answer choices, to be successful.

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The Eurasian ruffe, a fish species inadvertently introduced into North [#permalink]

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New post 01 Nov 2017, 01:37
aiglos wrote:
The Official Guide for GMAT Review, 12th Edition, 2009

Practice Question
Question No.: CR 30
Page: 509

The Eurasian ruffe, a fish species inadvertently introduced into North America’s Great Lakes in recent years, feeds on the eggs of lake whitefish, a native species, thus threatening the lakes’ natural ecosystem. To help track the ruffe’s spread, government agencies have produced wallet-sized cards about the ruffe. The cards contain pictures of the ruffe and explain the danger they pose; the cards also request anglers to report any ruffe they catch.

Which of the following, if true, would provide most support for the prediction that the agencies’ action will have its intended effect?

(A) The ruffe has spiny fins that make it unattractive as prey.

(B) Ruffe generally feed at night, but most recreational fishing on the Great Lakes is done during daytime hours.

(C) Most people who fish recreationally on the Great Lakes are interested in the preservation of the lake whitefish because it is a highly prized game fish.

(D) The ruffe is one of several nonnative species in the Great Lakes whose existence threatens the survival of lake whitefish populations there.

(E) The bait that most people use when fishing for whitefish on the Great Lakes is not attractive to ruffe.


How to Strengthen an Argument

Use the following points to effectively strengthen arguments:

1. Identify the conclusion—this is what you are trying to strengthen!

Because Strengthen questions are the polar opposite of Weaken questions, the correct approach to supporting a GMAT argument is to help the author’s conclusion. When evaluating an answer, ask yourself, “Would this answer choice assist the author in some way?” If so, you have the correct answer.

2. Personalize the argument.

Personalizing allows you to see the argument from a very involved perspective and helps you assess the strength of each answer.

3. Look for weaknesses in the argument.

This may seem like a strange recommendation since your task is to strengthen the argument, but a weak spot in an argument is tailor-made for an answer that eliminates that weakness. If you see a weakness or flaw in the argument, look for an answer that eliminates the weakness. In other words, close any gap or hole in the argument.

Many Strengthen questions require students to find the missing link between a premise and the conclusion. These missing links are assumptions made by the author, and bringing an assumption to light strengthens the argument because it validates part of the author’s thinking.

4. Arguments that contain analogies or use surveys rely upon the validity of those analogies and surveys.

Answer choices that strengthen the analogy or survey, or establish their soundness, are usually correct.

5. Remember that the correct answer can strengthen the argument just a little or a lot. This variation is what makes these questions difficult.

Three Incorrect Answer Traps

The same type of wrong answer traps appear in Strengthen as in Weaken questions:

1. Opposite Answers. These answers do the exact opposite of what is needed—they weaken the argument. Because of their direct relation to the conclusion they are attractive answer choices, despite the fact that they result in consequences opposite of those intended.

2. Shell Game Answers. Remember, a Shell Game occurs when an idea or concept is raised in the stimulus and then a very similar idea appears in the answer choice, but the idea is changed just enough to be incorrect but still attractive. In Strengthen questions, the Shell Game is usually used to support a conclusion that is similar to, but slightly different from, the one presented in the stimulus.

3. Out of Scope Answers. These answers simply miss the point of the argument and support issues that are either unrelated to the argument or tangential to the argument.

These three answer types are not the only ways an answer choice can be attractively incorrect, but they appear frequently enough that you should be familiar with each form.


Tracking the Ruffe

Step 1: Identify the Question

This question asks you to provide support for the prediction, so this is a Strengthen the Argument question.

Step 2: Deconstruct the Argument

R bad for lakes

To track R:

Cards to ang. → report if catch R

This argument presents a plan. Are there any issues or concerns about this plan working as intended?

(By the way, anglers is another name for people who fish.)

Step 3: Pause and State the Goal

On Strengthen questions, the goal is to find a piece of information that would support the conclusion. In this case, the correct should make the plan at least somewhat more likely to work.

Step 4: Work from Wrong to Right

(A) The attractiveness of the ruffe as prey does not affect whether the plan to track the ruffe will work.

(B) This answer presents information that would make the plan less likely to work. If fishermen tend to fish at a time when the ruffe generally don’t feed, they will not catch many ruffe and will therefore not be very helpful in tracking its spread.

(C) CORRECT. This information makes the plan more likely to work. If people who fish care about preserving the lake, they are more likely to take the time and the effort to report any ruffe that they catch.

(D) This answer is irrelevant because the plan presented in the argument is about tracking the ruffe. The effects of other species are not important to this plan.

(E) If anglers use bait that is not attractive to the ruffe, anglers will not catch many ruffe even if ruffe are present in the lake. These anglers will not be very helpful in tracking the ruffe, so this answer actually weakens the argument.
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