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      Question

      The government claims that the newly built

      Delhi–Jaipur Expressway will cut vehicular emissions by 35 percent by reducing traffic congestion and promoting fuel efficiency. Independent researchers, however, argue that improved roads often trigger “induced demand,” leading to higher traffic volume and overall emissions. They also point to poor maintenance and lack of electric-vehicle infrastructure as limiting factors. The long-term ecological balance, they say, depends more on transport behaviour than on road design alone. Which of the following, if true, most seriously weakens the government’s claim about emission reduction due to the expressway?
      A The expressway’s average vehicle speed increased from 40 km/h to 90 km/h after its inauguration. Correct Answer Incorrect Answer
      B The number of vehicles using the expressway increased by 70 percent within six months of opening. Correct Answer Incorrect Answer
      C The expressway is lined with solar-powered streetlights that offset a portion of its carbon footprint. Correct Answer Incorrect Answer
      D The toll revenue collected exceeded projections by 30 percent in the first quarter. Correct Answer Incorrect Answer
      E The government launched a carpooling initiative along the same route to cut down on traffic. Correct Answer Incorrect Answer

      Solution

      A steep increase in vehicle usage indicates induced demand, likely offsetting fuel-efficiency gains and thereby weakening the emission-reduction argument.

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