During volcanic eruptions, it has been observed that certain types of

Question

During volcanic eruptions, it has been observed that certain types of rocks are ejected into the atmosphere, and subsequently, lightning storms occur in the vicinity of the eruption. Scientists have proposed a hypothesis that the presence of specific minerals in these rocks is responsible for triggering lightning strikes.

Which of the following, if discovered to be true, most seriously undermines the hypothesis?

A) Lightning storms continue to occur in the vicinity of volcanic eruptions even after the ejected rocks have dispersed and are no longer present in the atmosphere.

B) Lightning mostly occurs only under certain atmospheric conditions, indicating that the presence of minerals might not fully explain their occurrence.

C) The lightning strikes that occur near volcanic eruptions tend to be more powerful than lightning strikes triggered by other natural phenomena.

D) Other geologic events, such as earthquakes or landslides, also result in the formation of lightning storms with similar frequency.

E) The total number of lightning strikes during a volcanic eruption is significantly higher than during any other type of atmospheric disturbance.

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Official Answer

D

molestiaeaut · Answer

I think the correct answer is A, as it's the one which is resonating with the passage and not the D.
If D is the correct answer please clarify how.

ManifestDreamMBA · Answer

What is the source of this question?

Tinytrotter · Answer

The main difference between D and A and why D is a better answer is that A basically says that lightning has continued even after the rocks have gone away from the atmosphere and hence that is the weakening part of the argument. But if you read the passage carefully, the passage states that the hypothesis is that these rocks TRIGGER lightning strikes, nowhere does it say that the lightning strikes only continue when they are present in the atmosphere. They are simply the TRIGGER event. Hence, A is incorrect.

D says same intensity lightning storms occur in other natural disaster areas where these rocks are not there to trigger the lightning storms. Hence, rocks are not responsible. Therefore, D is a better answer and correct

D says same intensity lightning storms occur in other natural disaster areas where these rocks are not there to trigger the lightning storms. Hence, rocks are not responsible. Therefore, D is a better answer and correct

KOHIINOOR · Answer

its from GMAT POINT DAILY TARGET

KOHIINOOR · Answer

Thank you for the explaination

KOHIINOOR · Answer

Yes D is the correct answer sorry for late reply

During volcanic eruptions, it has been observed that certain types of

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GMAT Critical Reasoning (CR) Questions

During volcanic eruptions, it has been observed that certain types of

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