Concept:Organising is the management function that arranges work, resources, and authority to achieve objectives.
Explanation:The question describes splitting tasks into smaller jobs and grouping them into departments.
It also involves delegating authority to employees or units.
This is exactly what organising does in management.
Staffing focuses on recruiting and placing people.
Directing and leading involve guiding and motivating staff, not dividing work.
Therefore, the correct management function is organising.
Answer:A. organizing