You might hear: "I do not want to go," or a full shutdown at the door. Refusal at this age is often connected to something specific: a social difficulty, a subject that feels hard, a friendship problem, a fear of failing something. The morning refusal is the symptom. The underlying concern is the actual issue. Pushing through the refusal without addressing what is underneath it means having the same battle tomorrow.
I am not going to force you out the door this second. Tell me what is really going on.