Correct option- b
Planning is basic function.
Explanation:
Planning acts as a base for all other functions of an organisation. It precedes all other functions like organising, directing, staffing and controlling. This is because plans state objectives and all other functions are in accordance with the said objectives. Plans state what is to be done, how it is to be done, when it is to be done, etc. Thus, it is regarded as the basic function of management.