By whom efforts quality of output is maintained?

Supervisory level management

The correct answer is option 3- Supervisory level management.

By the efforts of Supervisory level management, quality of output is maintained.

Supervisory management plays a very important role in the organisation since they interact with the actual work force and pass on instructions of the middle management to the workers. Through their efforts quality of output is maintained, wastage of materials is minimised and safety standards are maintained. The quality of workmanship and the quantity of output depends on the hard work, discipline and loyalty of the workers.