Final answer:
To effectively support the main argument, the student should consider incorporating an analysis of data from the National Sleep Foundation about shifting school start times, 2012 US Department of Education's survey on high school start times, and the American Academy of Pediatrics' 2014 policy statement.
Step-by-step explanation:
To best support the main argument of the paragraph, the writer should choose a source that provides objective and precise data relevant to the discussed issue. In this case, that would be the analysis of data from the National Sleep Foundation displaying how many schools have recently shifted their start times, as well as the summary of findings from a 2012 US Department of Education survey that disclosed the average high school start time to be 'no earlier than 8:30 a.m.'.
Furthermore, the American Academy of Pediatrics' 2014 policy statement recommending school start times to be 'no earlier than 8:30 a.m.' would also support the argument effectively because it provides professional and authoritative backing to the assertion. Anecdotes and historical comparisons, while insightful, don't offer enough evidence or weight to substantiate the main argument as effectively as these data-driven and authoritative sources do.
Learn more about Source Credibility