An 8 year old patient with all primary molars still present exhibits a cusp-to-cusp relationship of permanent maxillary and mandibular first molars and good alignment of the lower incisors. The management of this patient should be to

use a cervical headgear to reposition maxillary molars

place patient on appropriate recall schedule.

refer for orthodontic consultation

disk the distal surfaces of primary mandibular second molars