At better neighbors fencing, ten employees perform various aspects of the company's work. two people are in sales; four perform installation; one purchases materials; one does billing; two perform after-sales inspections. this type of organization reflects fayol's principle ofa. equity. b. unity of command. c. division of labor. d. hierarchy of authority.

C. division of labor

Explanation:

Division of labor -

It the method to divide the number of people according to their specialization to perform a particular task  , is known as division of task .

The process helps to fasten the process as , the expertise of the particular will perform the task in a better and fast way , rather than others , and the overall task will require lesser time for completion .

Hence , the example shown in the question is about division of labor .

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the third answer is correct.