Answer:
a. reduces the use of individual machines and hinders quality control at all stages of the manufacturing process.
Step-by-step explanation:
Productive efficiency: On a general level, is a state of the economy at which another unit cannot be produced without decreasing the production of another. Thus, the meaning of production efficiency is the use of all the resource available to produce the higher possible output.
When, a company reduce their machine hours per unit, it obtains more efficiency. It can yields more output than previously. Then, if the hinders to quality control are reduced as well, it takes less time to check the outcome thus, also increasing productivity. Repeating this on all stages of the manufacturiing process achieve the most production efficiency for the firm.