Final answer:
The boss is demonstrating Theory X management behavior.
Step-by-step explanation:
The boss in this situation is demonstrating Theory X management behavior. Theory X assumes that employees dislike work and need to be closely monitored and controlled. In this case, the boss dismisses the employees' suggestions and does not involve them in decision-making or goal-setting. This is consistent with the Theory X approach, where managers believe that employees want to be told what to do and do not enjoy work.