What was the result of assembly-line production, interchangeable parts, and specialization of labor?

The result of assembly-line production, interchangeable parts, and specialization of labor is the mass production of goods. Goods would be produced at a higher rate if it follows two methods which are the (1) segregation of work based on the capabilities or specialization of workers, and (2) the use of automated machines. 

usually her father was the one that controlled it after the death of the husband

the answer is c.

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