Human resource managers are trying to ease the "brain drain" in the workforce caused by highly$-$qualified, professional women leaving the workforce early$-$with specific retention plans and:

$$ a$)$ requiring Baby Boomers to work longer before they can retire.

b$)$ taking proactive steps to reintegrate women back into the workforce.

c$)$ making the highly$-$qualified, professional male workers do more of the work.

$$ d$)$ hiring more male younger workers right out of college.