Jill has been using Meadow deodorant since her mother first bought it for her. She switches to Confident! brand after her favorite musician endorses it. Which principle of influence does Jill's action illustrate?

Answer: Authority

Explanation:

Jill uses authority in the place if changing her deodorant, she knows that she has control over herself and her decision to change it proves so, as she doesn't see herself as being control by her mother in that aspect but rather makes her decision.