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A city government has introduced a car-free day every Sunday to reduce air pollution. Which of the following, if true, would most strengthen the decision?

Competition practiceLogical / Critical
  • APublic transport does not run on Sundays
  • BAir pollution in the city is caused mainly by vehicle emissions
  • CNeighbouring cities have not adopted such a measure
  • DMost residents use their cars on Sundays for leisure trips

Step-by-Step Solution

If vehicles are the main source of pollution, removing cars for a day would meaningfully cut pollution, strengthening the decision.
Answer: B) Air pollution in the city is caused mainly by vehicle emissions

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