Answer:
The supervisor used Persuasive Order to control the situation
Step-by-step explanation:
In the society, people tends to adapt different forms inorder to control a situation. For example, in war and a working environment, different approaches could be adapted to control a given situation.
In the case of the supervisor, he knows that, given a persuasive order about not going to the water cooler will help to alineate Zelda from friends she will gossip with. This approach ended up working for him on the long run.