Refer to the information provided in Figure 7.5 below to answer the question(s) that follow. 
Figure 7.5
-Refer to Figure 7.5. Diminishing marginal returns set in after the ________ worker is hired.
Definitions:
Working Relationships
The interactions and communications that occur between colleagues within a workplace environment.
Divisional Structure
An organizational structure composed of separate business units or divisions with their own functions and responsibilities that report to a central executive.
Matrix Structure
A matrix structure combines functional and divisional approaches to emphasise project or program teams.
Technical Automobile Parts
Specific components designed for use in the manufacturing and functioning of automobiles, including engine parts, transmissions, and electrical systems.
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