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Expression of IdeasVery hardMaking a recommendation supported by figures

Expression of Ideas practice question

While researching a topic, a student has taken the following notes: - The town is deciding whether to replace its 2,000 streetlights with LEDs. - An LED streetlight costs £400; the current type costs £150. - An LED lasts about 15 years; the current type lasts about 4. - LEDs use 60 percent less electricity. The student wants to recommend the switch to LEDs and support the recommendation with figures.

Which choice most effectively uses relevant information from the notes to accomplish this goal?

  1. A. The town should switch to LEDs: although each costs £400 rather than £150, it lasts about 15 years instead of 4 and uses 60 percent less electricity.Correct
  2. B. The town has 2,000 streetlights.
  3. C. LED streetlights cost £400 each, more than twice the price of the current type.
  4. D. The town should switch to LEDs.

Answer: A. The town should switch to LEDs: although each costs £400 rather than £150, it lasts about 15 years instead of 4 and uses 60 percent less electricity.

The recommendation, the cost conceded, and two supporting figures.

Why the other answers are wrong

B. The town has 2,000 streetlights.
A count, no recommendation.
C. LED streetlights cost £400 each, more than twice the price of the current type.
A figure that argues against the switch, with no recommendation.
D. The town should switch to LEDs.
No support.

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