Decades of research have reinforced some of what many people intuitively believe about OB and identified common misunderstandings, Which of the following questions could NOT be answered as a result of this research into OB?

Decades of research have reinforced some of what many people intuitively believe about OB and identified common misunderstandings, Which of the following questions could NOT be answered as a result of this research into OB?
a. What goal level will best motivate my employees?
b. Is stress always bad?
c. How important is job satisfaction to job performance?
d. Should I seek a promotion with a competing firm?