The above columns can be correctly matched as

a. Henry Fayol was a French mining engineer who developed 14 principles of management after conducting many experiments. He is also known as the “father of modern management”. 

b. The principle of unity of command states that a subordinate should get orders from only one superior. If too many seniors command a single employee, chances are that the employee will get confused; this will also lead to delay in work. 

c. In this method, the work or task to be performed is studied in detail and the time taken to complete a particular task is calculated. This helps managers to know the standard time that should be taken to complete a given task. 

d. F W Taylor is known as the “father of scientific management”. He developed principles that were based on scientific experiments. He believed that problems should be solved in a scientific manner rather than on the basis of the rule of thumb. 

e. An important feature of management principles is that they are universal in nature. This means that they are applicable to all types of business organisations and to all levels of management.