Question: 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 non-native 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.

Corrcet Answer: C
Explanation:

In the critical reasoning part of the GMAT, you will be tested on your ability to analyze and think critically. To answer clearly, a person needs to have a lot of brain power.

To make a choice, each option needs to be carefully examined. Only one of the five choices given will be right. To make the best choice, the candidate must think about many things.

After the Ruffe
Step 1: Determine the Issue
This is a Strengthen the Argument question because it requires you to support the prediction.

Deconstruct the argument in Step 2
R harmful to lakes
To follow R:
Cards to ang. If you catch R, report it.
This justification offers a strategy. Are there any problems or doubts that this plan will function as intended?
Anglers are another term for fishermen, by the way.

Step 3: Stop and State the Objective
Finding evidence to support the conclusion is the aim of the Strengthen questions. The strategy should be at least somewhat more likely to succeed in this situation if the correction is given.

Step 4: Go from wrong to right.
Let’s check the given choices -

A: Incorrect

It is an incorrect choice. Anglers will undoubtedly be unsuccessful in catching Ruffe fish if they utilize a bait that is unappealing to these fish. However, following the government agency's campaign to raise awareness of the risks posed by ruffe. To catch it, these fishermen would probably switch the bait to something that draws aggressive fish.

B: Incorrect

It is the wrong choice. The information in this response would reduce the likelihood that the plan will succeed. Fishermen won't catch many ruffe and won't be very useful in determining the spread of the species if they frequently fish when the ruffe aren't typically feeding.

C: Correct

It is the correct choice. This information increases the likelihood that the plan will succeed. People who fish are more likely to take the time and trouble to report any ruffe they capture if they care about keeping the lake in good condition.

D: Incorrect

It is an incorrect answer. The plan put forward in the argument is about tracking the ruffe, thus this response is useless. Other species' effects are not significant to this plan.

E: Incorrect

It is an incorrect answer. Even if ruffe is present in the lake, fishermen will not catch many ruffe if they utilize bait that is unappealing to the ruffe. This response essentially undermines the case because this fisherman won't be particularly useful in locating the ruffe.

“The Eurasian ruffe, a fish species inadvertently introduced into North” – is a  GMAT Critical question. To answer the question, a candidate can either find a piece of evidence that would weaken the argument or have logical flaws in the argument. GMAT critical reasoning tests the logical and analytical skills of the candidates. This topic requires candidates to find the argument's strengths and weaknesses or the logical flaw in the argument. The GMAT CR section contains 10 -13 GMAT critical reasoning questions out of 36 GMAT verbal questions.

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