The best title for this paragraph is______.

A．their work
B．their children
C．their husbands' inability to protect the family and provide companionship
D．leisure activities

A．Shiftwork had a direct effect on the attitudes and behavior of family members.
B．Shiftworkers could live a normal life.
C．Shiftwork couples had unconventional ideas about marriage.
D．Female shiftworkers were satisfied with the time spent together with their families.