George's ordinary morning routine was interrupted on this day as mr. and mrs. webb enforced the tradition that _____. he must not see his bride or her father on this morning he must eat a breakfast reputed to guarantee a happy, healthy life he must pick up his tuxedo and be sure it fit correctly he must have breakfast and a long talk about responsibility with the bride's father

I believe the answer is: he must not see his bride or her father on this morning
In traditional superstition, it's a bad luck to see the bride before the unveiling ceremony.
According to this superstition, if the groom see his bride before the wedding, the couple could face troubles such as financial difficulties, difficulties in having children, or even divorce

Answer Link