Which nursing observation of the patient in intensive care indicates the patient is sleeping comfortably during NREM sleep?

Eyes closed, lying supine in bed, respirations 22, heart rate 66.

Eyes closed, mumbling to self, respirations 16, heart rate 68.

Eyes closed, tossing in bed, respirations 18, heart rate 80.

Eyes closed, lying quietly, respirations 12, heart rate 60.