Every March, Stacey's Women's Wear Holds a Fashion Show to Give

Every March, Stacey's Women's Wear holds a fashion show to give its customers a preview of the store's new fashions for spring and summer. This practice is an example of a/an

A) ritual or ceremony.
B) metaphor or myth.
C) artifact or custom.
D) observance or custom.
E) control or routine.