Explanation:

- Organising function: This involves arranging resources and tasks to achieve the plan. It follows planning but is not directly linked back by the controlling function.

- Directing function: This involves leading and motivating staff to execute the plans. It deals with the implementation of plans but doesn't link back to the cycle as the controlling function does.

- Planning function: This is the first step in the management cycle, where goals are defined. The controlling function ensures these goals are met, and if not, prompts a return to planning to adjust plans accordingly.

- None of the above: Not correct as an option since controlling connects back to planning.

Answer: Planning function

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