"Adherence to the principles of management adds to knowledge, ability and understanding of managerial situations and circumstances".

Identify the point of importance of principles of management stated here.

Option 1 -> Effective administration: This refers to how principles help in efficiently managing and organizing work, but doesn't specifically address gaining knowledge and understanding of situations.

Option 2 -> Scientific decisions: This relates to making logical, systematic decisions based on principles, but the statement emphasizes understanding situations rather than decision-making.

Option 3 -> Management training, education and research: While principles are used in training, the statement focuses on gaining insights into actual managerial circumstances, not formal education programs.

Option 4 -> Providing managers with useful insights into reality: This directly aligns with the statement as "insights into reality" means understanding real managerial situations and circumstances, which is exactly what the statement describes.

Hence, Option 4: Providing managers with useful insights into reality -> The statement emphasizes that principles add to "knowledge, ability and understanding of managerial situations and circumstances," which is precisely what providing insights into reality means - helping managers comprehend and understand real-world managerial scenarios better -> correct