Final answer:
In 'Fiddler on the Roof,' Tevye is the character who expresses concern over telling his wife, Golde, about modern children and their actions.
Step-by-step explanation:
In the musical Fiddler on the Roof, it is Tevye who exclaims, "Modern children...Golde! What will I tell Golde? What am I going to do about Golde? Help!" This line highlights Tevye's constant struggle to maintain his Jewish traditions while coping with the changing world and his daughters' desires to follow their hearts.