Answer:
The correct word for the blank space is: unfreezing stage.
Step-by-step explanation:
German psychologist and philosopher Kurt Lewin (1890-1947) proposed the organization theory of change in which a firm went through three stages in the process of changing its operation's method: unfreezing, change, and refreeze. The unfreezing is the first step of the model in which employees may be reluctant to change but it is the job of the high executives to promote the need for modification by exposing the failures of the firm's old method of work.