1. The answer is A. Government
In a socialist system, we give all power in economic and millitary to the central Government.
The Government will decide which sectors will be given incentive and will distribute all the income from all economic sectors to all citizens in the form of Welfare.
2. The answer is C. to improve working condition
Many companies often require their workers to in a high load/intensity while not paying them enough money to sustain their living. The companies also do not pay attention to safety standards which could endanger workers.
To take care of this, Worker's union was established