Over the Past Two Decades, Business Schools Have Added Required

Over the past two decades, business schools have added required courses on people skills to many of their curricula. Why have they done this?

A) There is an increased emphasis in controlling employee behavior in the workplace.
B) These skills enable managers to effectively lead human resources departments.
C) A manager with good people skills can help create a pleasant workplace.
D) Managers need to understand human behavior if they are to be effective.
E) Managers no longer need technical skills in subjects such as economics and accounting to succeed.