Why Is It Unlikely That Couples Can Achieve Work-Family Balance

Why is it unlikely that couples can achieve work-family balance simply by choosing part-time work while rearing children?

A) Part-time jobs typically pay substantially less per hour than full-time work.
B) Too many men refuse to participate in child care,a traditionally female activity.
C) Part-time employment too often requires a career change.
D) Women who are able to support themselves are more apt to leave unhappy marriages.