Research studies have documented that chicken eggs are a good proxy to show the effects of various substances on human fetuses. The results of a new study showed that acute exposure to cell phone radiation caused an increased incidence of birth defects in chickens. The eggs were exposed to cell phone radiation continuously throughout the 21-day incubation period from an emission source placed 6 centimeters away from each egg. Which of the following can be logically concluded from the above passage? A. Pregnant women should avoid excessive amounts of cell phone radiation in the vicinity of the womb. B. If the emission source had been placed closer to the eggs, the incidence of birth defects would have been even higher. C. Pregnant women should not allow cell phones within 6 centimeters of their abdomens at any time during the pregnancy. D. Radiation was the sole cause of the birth defects in the chickens. E. In this case, the results will not be relevant for humans because the primary consequence was thinning of the eggs' shells, which then resulted in the birth defects. Source: Peterson

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Research studies have documented that chicken eggs are a

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prabsahi

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01 Dec 2018, 19:09

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DmitryFarber

I'm afraid that's not right, either. Imagine that I changed the tense of my example and generalized: Moldy cake makes people sick. I could even make it 100% certain: Moldy cake always makes people sick. That still wouldn't tell us that we can't get sick any other way. To get an "only" causal relationship, we need to be told that directly:

Only X causes Y.

Y happens only as a result of X.

However, since the GMAT deals mostly with realistic situations rather than formal logic, I doubt you will ever see this on the test. It's very hard (one might say impossible) to find realistic examples in which we KNOW that only one thing could possibly cause a certain effect.

This is a major logic GAP that I had.Thanks so much for correcting

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Doesn't the word excessive radiations makes this option far too fetched??...i avoided this option just because of excessive which is not given in the passage for eggs and thus chose C instead of A

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