Answer:
The answer is option D (management support)
Step-by-step explanation:
The change process in management otherwise referred to as Change Management Processes talks about implementing organizational change through using various acceptable steps which include developing and implementing change plans or decisions with the aim of moving a change from inception to meet its intended outcomes.
The answer is option D, as "unrealistic expectations, lack of meaningful participation, and the purpose of the program was not clear" are all problems of the change process with "management support" an exception as management support even aid decision making which ensures change process.