Answer:
authority
Step-by-step explanation:
The word "authority" is defined as the power or control to make decisions or give orders to others. It is a way to control others in a particular way.
Thus Jenny uses her authority over others to make decisions, give orders, and utilize resources as she was the day manager of Sun Health Club.
She is authorized or has the right to give orders and make decisions on her subordinates. She can also see the club's budgets and utilize the club's resources.
Thus the answer is "authority".