Answer: a narrow span of control; a wide span of control
Step-by-step explanation:
Based on the information given, the major clients division managers can be described as having a narrow span of control, as opposed to a wide span of control for the product assembly division managers.
The span of control simply means the number of subordinates that are under the direct control and supervised by a certain manager.
Since we are informed that while in the major clients division, every manager is assigned three employees to supervise, whereas in the product assembly division, each manager supervises about 15 employees, then product assembly division managers has a wide span of control.