Answer:
The reason for the change is D. all the above reasons.
The communist citizens wanted a change because of poor working conditions, lack of consumer goods, and slow and corrupt government.
Step-by-step explanation:
The communist citizens experienced that the working conditions that are being provided for the employees to work are not suitable for their physical as well as mental health.
Moreover, they also believed that the working conditions are affecting the efficiency of the workers that is why there are fewer consumer goods produced. They thought that the government is either slow at making decisions to change or is corrupt.