According to the passage, many working parents may be forced to make any of the following types of career decisions EXCEPT A. declining professional positions for nonprofessional ones, which typically have less conventional work schedules B. accepting part-time employment rather than full-time employment C. taking jobs with limited responsibility, and thus more limited career opportunities, in order to have a more flexible schedule D. pursuing career specializations that allow them to control their work schedules instead of pursuing a more desirable specialization in the same field E. limiting the career potential of one parent, often the mother, who assumes greater child-care responsibility