Question

How did mass production change the roles in the workplace?

Answer 1

The work once done by skilled workers was now done by machines and unskilled workers.
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Answer 2

B. The work once done by skilled workers was now done by machines and unskilled workers. 

Mass-production techniques and technology called for setting up huge factories with large work force. It created a lot of jobs but due to the division of labor, the skill requirements for a particular job were quite monotonous. Skilled workers were replaced by machines and unskilled machine operators that could perform a single task instead of an array of tasks.