Step 1: Understanding the controlling function in management.
Controlling is a practical aspect of management because it involves monitoring performance and making adjustments to achieve organizational goals. It ensures that the company's strategies are being executed as planned and makes necessary corrections.
Step 2: Analyzing the options.
(A) Theoretical: Incorrect. Controlling is not just a theory; it is an actionable process in management.
(B) Practical: Correct. Controlling is a practical aspect as it requires real-world application to track and adjust the performance of operations.
(C) Mental: Incorrect. While mental effort is involved, controlling is not purely a mental process.
(D) Physical: Incorrect. Controlling involves more than just physical actions; it includes decision-making and monitoring.
Step 3: Conclusion.
The correct answer is (B) Practical, as controlling involves practical activities like monitoring performance and making adjustments.