Support each reason with specific evidence -- a fact, example, or detail that proves the reason is true.
A reason without evidence is just a claim on top of a claim. EVIDENCE is the specific fact, example, or detail that proves your reason is true. If your reason is "a later bedtime means more family time," your evidence might be a specific example: "On Friday nights, my family plays board games until 9:30, but I usually have to stop early for bed."
Strong evidence is specific, not vague. "It would be better" is not evidence; a real example, fact, or detail is.
Mastery looks like: They write specific, concrete evidence (a fact, example, or detail) supporting each of their reasons.
Common stumbles: Writing vague "evidence" that just restates the reason in different words instead of proving it with a specific detail.