GMAT Verbal Reasoning Practice Test 7

Question : 21 of 100

Marks: +1, -0

Stoneport is a big city with high demand for electricity, and it sometimes experiences shortages when its power grid is overloaded because of a lack of sufficient transmission lines from distant power plants. Stoneport plans to help solve this problem with tax breaks for businesses that build small generating plants for themselves fueled by diesel fuel or gas. These businesses would thus be able to generate electricity for their own use, considerably reducing pressure on the grid at peak periods.
Which of the following, if true, casts the most doubt on the plan’s chances of success?

Without financial incentives, many business customers are unwilling to invest in the capacity to generate their own power
New long-distance transmission lines are expensive to build, and there is often significant political opposition to their construction
Previous city programs that encouraged energy saving have helped make Stoneport’s retail businesses and office buildings the most energy efficient in any city in the nation
Because of Stoneport’s density, most businesses must employ special, extremely expensive construction methods when adding on to existing facilities
Financial incentives in other cities that are similar in size to Stoneport have successfully encouraged businesses to cut energy use at times of peak demand

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