GMAT Question of the Day

September 3, 2013



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Today's Practice GMAT Question:

Mayor of Alberville: Factories in Alberville together emitted twenty percent less carbon dioxide in 2001 than in 2000. The decline in emissions was probably due almost exclusively to the March 2001 development of floating seaweed farms, the first step toward reducing carbon dioxide emissions that, in addition to being cost-efficient, was also widespread.
Scientists: That cannot be the cause. As you yourself clearly stated, carbon dioxide emissions were reduced by twenty percent. Yet seaweed farms can only absorb ten percent of Alberville factories' emissions.
Which of the following, if true, would most seriously weaken the force of the objection that the scientists present to the mayor's explanation?
(A) The cost of the seaweed farms was covered by a tax increase to industrial firms in Alberville.
(B) The number of factories in Alberville was greater in 2001 than in 2000.
(C) Seaweed farms had a greater effect on Alberville emissions levels than any other plan undertaken in Alberville.
(D) Seaweed farms are more cost-efficient than any other method of reducing emissions.
(E) When seaweed plants die, they can be used as a low-emissions fuel source.


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Need more work in this area? In Total GMAT Verbal, there is an entire chapter, including practice problems, that covers Weaken.

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About the author: Jeff Sackmann has written many GMAT preparation books, including the popular Total GMAT Math, Total GMAT Verbal, and GMAT 111. He has also created explanations for problems in The Official Guide, as well as 1,800 practice GMAT math questions.

Total GMAT Verbal

The comprehensive guide to the GMAT Verbal section. Recognize, dissect, and master every question type you'll face on the test. Everything you need, all in one place, including 100+ realistic practice questions.
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