medium · SAT Reading & Writing

A researcher surveyed teenagers about their screen-time habits before bed and measured their average nightly sleep duration. Results are shown below. Screen Time Before Bed (hours): Average Nightly Sleep Duration (hours) 0: 8.5 1: 8.1 2: 7.6 3: 6.9 4: 6.0 5: 5.2 A sleep researcher claims that, among the teenagers surveyed, more screen time before bed is associated with less average nightly sleep. Which choice most effectively uses data from the table to support the researcher's claim?

1. Teens with 0 hours of screen time averaged 8.5 hours of sleep, the highest in the table, while teens with 5 hours of screen time averaged 5.2, the lowest — more screen time, less sleep.
2. The data prove that any screen use before bed directly causes permanent sleep damage in teenagers regardless of any other habits.
3. Teens with 0 hours of screen time before bed averaged only 5.2 hours of sleep, while teens with 5 hours of screen time before bed averaged 8.5 hours, showing that more screen time is associated with more sleep.
4. The survey included teenagers reporting anywhere from 0 to 5 hours of screen time before bed, capturing a wide range of habits among the group studied.

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