Sunflowers Growing in Pots Were Placed, with their Roots Submerged, in GMAT Critical Reasoning

Question: Sunflowers growing in pots were placed, with their roots submerged, in the pond contaminated with radioactive elements. The sunflowers kept growing; in the process, they absorbed radioactive elements. Within twelve days, 85 percent of the radioactive elements were removed from the water, which is no less than can be accomplished with the much more expensive conventional filtration techniques. Scientists therefore propose using sunflowers for decontamination wherever there are radioactively contaminated ponds.

Which of the following, if true, points to a limitation on the applicability of the proposed method of decontamination?

(A) Some plants other than sunflowers can also remove radioactive elements from water.
(B) The water in many ponds contaminated with radioactive elements is so cold that it would kill sunflowers whose roots were submerged in it.
(C) Sunflowers that grow with their roots submerged in water grow less well than sunflowers growing under optimal conditions on dry land.
(D) Only species of sunflowers with large leaves can have their roots submerged in water and still keep growing.
(E) In ponds in which the circulation of the water is artificially increased, sunflowers absorb radioactive elements far faster than they do in other ponds.

Answer: B
Explanation: On the GMAT's critical reasoning portion, analytical and critical thinking abilities are assessed. To answer clearly, a person must possess strong cognitive abilities.

Given that,
The roots of sunflowers grown in pots were buried in a pond contaminated with radioactive materials. As the sunflowers continued to expand, they absorbed radioactive materials. In twelve days, 85 percent of the radioactive materials were removed from the water, which is comparable to what can be accomplished with conventional filtration processes that are far more expensive. Therefore, scientists recommend utilizing sunflowers to decontaminate radioactively contaminated ponds.
Conclusion: recommend utilizing sunflowers to decontaminate radioactively polluted ponds wherever they exist.
Which of the following, if true, would restrict the applicability of the proposed decontamination method?
Weaken question. We must discover the answer to the question. Sunflowers cannot be used to absorb radioactive elements.

A: Incorrect
It is an incorrect answer. This statement is out of scope. We are talking about sunflowers here.

B: Correct
It is the correct choice. According to B, the majority of the radioactively contaminated ponds have temperatures that are too low for sunflowers to thrive in them.

C: Incorrect
It is the wrong choice. We are not interested in learning how successful growing sunflowers can be.

D: Incorrect
It is an incorrect choice. It is not terribly important because the researchers may suggest using sunflowers with huge leaves instead. We have one remaining sunflower variety for this project.

E: Incorrect
It is an incorrect answer. This choice is out of the scope of the given passage. Sunflowers work in these ponds

“Sunflowers growing in pots were placed, with their roots submerged, in” – 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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