Which kind of evidence would help to further support an argument that school start time should be later?

A quotation from a newspaper describing what kids need for a healthy sleep schedule
A quotation from a student explaining how much he likes sleeping
A quotation from Parent Sharron, how busy the school is in the morning
A quotation from a teacher, stating how much more focused students is in the morning.

A quotation from a newspaper describing what kids need for a healthy sleep schedule would help to further support the argument that school start time should be later. This evidence would provide information about the importance of sufficient sleep for students' well-being and academic performance.