Answer: Specialization
Explanation:
The job specialization is the one of the concept that basically focuses on the special areas and also the expertise in which the people perform various types of tasks based on their abilities.
The job specialization is one of the important factor that helps the organization for achieve the desired goals and also increase the growth of the business quality.
According to the given question, the IBM's manufacturing plant are basically arranged by the workers in more efficient way where the one worker performed the duty by drawing the strengthen of the wiring and other workers doing their expertise task.
Therefore, the above given example is refers to the job specialization.