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Expression of IdeasVery hardPresenting a nuanced summary of evidence

Expression of Ideas practice question

While researching a topic, a student has taken the following notes: - Trials of a new insomnia app reported that users fell asleep 12 minutes faster on average. - The trials lasted four weeks. - Half of the users had stopped using the app by week three. - Users who kept using it for all four weeks fell asleep 20 minutes faster.

The student wants to convey that the app's benefit depends on continued use. Which choice most effectively uses relevant information from the notes to accomplish this goal?

  1. A. Although users on average fell asleep 12 minutes faster, half had stopped using the app by week three, and those who kept it up for all four weeks gained 20 minutes.Correct
  2. B. The app helps people fall asleep 12 minutes faster.
  3. C. The trials lasted four weeks.
  4. D. Half of the users stopped using the app.

Answer: A. Although users on average fell asleep 12 minutes faster, half had stopped using the app by week three, and those who kept it up for all four weeks gained 20 minutes.

The average, the drop-off, and the larger gain for persisters.

Why the other answers are wrong

B. The app helps people fall asleep 12 minutes faster.
Only the average; nothing about continued use.
C. The trials lasted four weeks.
Duration only.
D. Half of the users stopped using the app.
The drop-off without its consequence.

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