Answer: Lack of trust between employees and management
Top management support and communication
Step-by-step explanation:
From the information provided in the question, the most likely cause of resistance to change based on the situation is the lack of trust between the employees and management. For effectiveness and efficiency in any organization, there must be trust and unity between the workers and the management. A firm with distrust won't grow and achieving goals will be hard.
The most effective tactic for the implementation of the changes in this situation would be top management support and communication. Communication is important for every organization. The workers and management need to communicate for the required information to be passed across effectively.