$\_\_\_\_\_\_\_\_$ refers to how many workers a supervisor can effectively and efficiently supervise.

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Part $1$

A$.$

Responsibility

B$.$

Formalization

C$.$

Unity of command

D$.$

Span of control

E$.$

DepartmentalizationFast food chains dividing work activities into separate job$$ tasks, such as cooking$$ burgers, drive$-$thru$$ order$-$taking, and cashiering$$ dine$-$in orders, is a great example of$\_\_\_\_\_\_\_\_.$

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Part $1$

A$.$

the chain of command

B$.$

departmentalization

C$.$

work specialization

D$.$

formalization

E$.$

centralization