16Hit1600
Expression of IdeasHardPointing out that a cause cannot be isolated

Expression of Ideas practice question

While researching a topic, a student has taken the following notes: - A town's recycling rate rose from 20 percent to 45 percent between 2018 and 2020. - In 2019 the town replaced small recycling boxes with large wheeled bins. - Also in 2019 the town began collecting food waste separately. - No other changes were made to waste collection. The student wants to point out that the rise cannot be attributed to a single change.

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

  1. A. Because the town introduced wheeled bins and separate food-waste collection in the same year, the rise in recycling from 20 to 45 percent cannot be credited to either change alone.Correct
  2. B. The town's recycling rate rose from 20 percent to 45 percent.
  3. C. The wheeled bins caused the recycling rate to rise.
  4. D. The town began collecting food waste in 2019.

Answer: A. Because the town introduced wheeled bins and separate food-waste collection in the same year, the rise in recycling from 20 to 45 percent cannot be credited to either change alone.

Two changes at once, so neither can be isolated.

Why the other answers are wrong

B. The town's recycling rate rose from 20 percent to 45 percent.
The result, with no comment on causes.
C. The wheeled bins caused the recycling rate to rise.
Attributes the rise to one change, which the notes do not support.
D. The town began collecting food waste in 2019.
One change only.

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