AP English Language and Composition Question of the Day

Changing the first bell to 8:45 is not an indulgence; it is a correction. For years we have run adolescents on adult schedules and then scolded them for yawning. Under our current timetable, teens wait for buses in the dim blue of morning, dozing through first period; under a later bell, the same students wake in daylight, eat breakfast, and engage. The distinction is not cosmetic. When schools that resemble ours have made the shift, they report fewer late arrivals and nurse visits; districts that retained the earlier start continue to report the same old complaints. The comparison is instructive because nothing else about those schools changed—the curriculum, the teachers, the neighborhoods remained constant. What changed was the clock. We can argue abstractions all day, but when two otherwise similar models reliably yield different outcomes, the sensible course is to adopt the one that produces more learning. That is why I support moving the first bell to 8:45.

Which of the following best describes the reasoning the author uses in lines 3–9?