The day before Disney World in Florida was to open, the sod around one of the resort hotels had not been laid. CEO Michael Eisner took off his suit coat and tie, rolled up his sleeves, and began laying sod. He instructed his managers to do likewise but many objected, saying they did not know how to lay sod. "It's not hard, boys," said Eisner. "The green side goes up$."$ This is an example of a that reinforces culture.

a$.$ story

b$.$ artifact

c$.$ tradition

d$.$ ritual