A gym notices members cancel after 2 months. What is the BEST retention strategy?

A manufacturer of motorcycles estimates that if thousand dollars is spent on advertising, then

Fill-in blank: The [BLANK-1] and mandibular prominences form the skeletal framework of the face.  

Fill-in blank: The [BLANK-1] forms the base of the cranium. 

Fill-in blank: The oronasal membrane is formed by the fusion of nasal pits with the [BLANK-1].  

Fill-in blank: The [BLANK-1] muscles of the thoracic wall are active during forced expiration.

Fill-in blank: The [BLANK-1] separates the body of the tongue from its root. 

Fill-in blank: The primary action of the infrahyoid muscles is to [BLANK-1] the hyoid bone. 

Fill-in blank: The opening between the vocal folds is the [BLANK-1]. 

Fill-in blank: The neonatal skull has [BLANK-1] bones, which consolidate into bones in the adult.