Step 1: Understanding the question.
The question asks for the function that ties back the management cycle to the planning function.
Step 2: Analyzing the options.
- Organising: This function involves structuring resources and tasks but does not directly link back to planning.
- Coordinating: This involves managing the various activities and ensuring they work in harmony, but does not necessarily link back to the planning phase.
- Controlling: Controlling ensures that activities are on track, and when discrepancies are found, it provides feedback that informs future planning. This creates a loop back to planning.
- Directing: This function involves leading and guiding, but does not directly bring the cycle back to planning.
Step 3: Conclusion.
The correct answer is Controlling, as it connects the outcomes of the management cycle to future planning.
Final Answer:
\[
\boxed{\text{The correct answer is (3) Controlling.}}
\]