Expression of IdeasHardPresenting a benefit and a cost
Expression of Ideas practice question
While researching a topic, a student has taken the following notes:
- A town replaced its roundabout with traffic lights.
- Pedestrian crossings became safer: injuries fell by a third.
- Average queue lengths at peak times doubled.
- Bus journey times through the junction rose by four minutes.
The student wants to present both a benefit and a cost of the change. Which choice most effectively uses relevant information from the notes to accomplish this goal?
- A. Pedestrian injuries at the junction fell by a third after the lights went in, though peak-time queues doubled and bus journeys lengthened by four minutes.Correct
- B. Pedestrian injuries fell by a third.
- C. Queues doubled at peak times.
- D. The town replaced its roundabout.
Answer: A. Pedestrian injuries at the junction fell by a third after the lights went in, though peak-time queues doubled and bus journeys lengthened by four minutes.
The gain and the costs together.
Why the other answers are wrong
- B. Pedestrian injuries fell by a third.
- Benefit only.
- C. Queues doubled at peak times.
- Cost only.
- D. The town replaced its roundabout.
- Setup only.
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