Critical Reasoning
Verbal Ability

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The tulu, a popular ornamental plant, does not reproduce naturally, and isonly bred and sold by specialized horticultural companies. Unfortunately, thetulu is easily devastated by a contagious fungal rot. The government ministry plans to reassure worried gardeners by requiring all tulu plants to betested for fungal rot before being sold. However, infected plants less than 30 weeks old have generally notbuilt up enough fungal rot in their systems to be detected reliably. And many tulu plants are sold before they are 24 weeks old.

Which of the following, if performed bythe government ministry, could logically be expected to overcome the problem with their plan to test for the fungal rot?


Releasing a general announcement that tulu plants less than 30 weeks old cannot be effectively tested for fungal rot


Requiring all tulu plants less than 30 weeks old to be labeled as such


Researching possible ways to test tulu plants less than 24 weeks old for fungal rot


Ensuring that tulu plants not be sold before they are 30 weeks old


Quarantining all tulu plants from horticultural companies at which any case of fungal rot has been detected until those tulu plants can be tested for fungal rot

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Option(D) is correct

Option A :  Releasing such an announcement would helpovercome the problem if it guaranteedthat no one would buyor sell tulu plantsbefore the plantswere 30 weeks old, but it is far from certain that such an announcement would guarantee this.

Option B :  Since some people maynot be aware of the significance ofsuch labeling, such labeling might have very little effect.

Option C :  There is no guarantee that such research willbe successful at reducing the age at which tulu plants can be reliably tested.

Option D :  Correct. If the government ensures that no tulu plantsless than 30 weeks of ageare sold, then the specific problem mentioned in the passage would be overcome.

Option E :  This will not help overcome the problem. Such a quarantine program might lead horticultural companies to start selling tulu plants only if they areless than 24 weeks old, thereby minimizing the chance of quarantine by minimizing the chance of detection.

The correct answer is D.

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