Answer:
d. empowerment
Step-by-step explanation:
Empowerment -
It is the method to increase the self - determination of the person , in order to represent them in a better way , is known as empowerment .
Empowerment increases the strength and confidence of a human being , and become capable to fight for their right .
hence , from the question , the tool of empowerment is used by the boss of john , to motivate people .