The reason that fails to support the claim that high school classes should begin later in the morning than elementary or middle school classes is: "Teenagers have a reported tendency to skip breakfast."
This statement does not provide a meaningful argument for the need to start high school later. Instead, it merely highlights a behavior of teenagers which does not directly relate to the benefits of later school start times compared to younger children. The other points provided about teenagers being more likely to work late jobs or struggle with early mornings are more relevant to supporting the claim.