In a firm that manufactures clothing, the department responsible for actually assembling the garments could best be described as a(n):

A. Cost center
B. Department in which all of the costs incurred are indirect expenses
C. Service department
D. Department in which all of the costs incurred are direct expenses
E. Operating or production department

Operating or production department would be the most fitting description for the department in a clothing manufacturing firm responsible for assembling garments. This department directly engages in the production process and contributes to the creation of the final product.

These departments typically incur both direct and indirect costs. Direct costs are traceable to the department like salaries of staff working solely within the assembly unit, while indirect costs are shared expenses such as administrative support.

Variable costs like labor for assembling garments change based on production levels, while fixed costs associated with managing the plant remain constant regardless of the quantity of clothes manufactured.

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