The statements form key elements of the listed theories. Match them.

a.  Scientific management

 b.  The theory of bureaucracy

 c.  Chaos theory

 d.  Management principles

 e.  Socio-technical systems

 f.  Human relations

13.1 The future is unknowable.  

13.2 The interaction between people and processes is important.   

13.3 The employee may contribute as much as the manager may.   

13.4 Motivation is primarily based on pay.   

13.5 Unity of command is important.   

13.6 Actions are subject to rules and procedures.