A manager who strives to make employees' jobs challenging and interesting is using the

A) human-relations approach.
B) scientific-management approach.
C) ergonomic approach.
D) Cleavon-Little approach.

The human-relations approach emphasizes the importance of creating a positive work environment that considers employees' psychological and social needs. By striving to make employees' jobs challenging and interesting, a manager is demonstrating a concern for their personal growth and development, which is a key element of the human-relations approach. The scientific-management approach, on the other hand, emphasizes efficiency and standardization, and may not prioritize employee engagement in the same way. The ergonomic approach focuses on designing workspaces and tasks that are physically comfortable and safe, but does not necessarily address the psychological or social aspects of work. The Cleavon-Little approach is not a recognized management philosophy or approach.