400
Which of the following is OSHA's preferred hierarchy of control methods, ranked from most preferred to least preferred?
a. PPE, Engineering Controls, Administrative Controls, Work Practice Controls
b. Engineering Controls, PPE ,Work Practice Controls, Administrative Controls
c. Engineering Controls, Administrative Controls, PPE, Work Practice Controls
d. Administrative Controls, Work Practice Controls, Engineering Controls, PPE
d. Administrative Controls, Work Practice Controls, Engineering Controls, PPE