Assertion (A) - Coordination is a continuous process, it begins at the stage of planning and continues till the stage of controlling.
Reason (R) - A manager works continuously to achieve coordination and maintain coordination, because without coordination the organisation cannot function efficiently.

[0.80 marks]

The correct option is A Both Assertion (A) and Reason (R) are true, and Reason (R) is the correct explanation of Assertion (A).
Coordination is a non-ending function. It is a continuous function, although its degree may vary. The managers work continuously to achieve coordination and maintain coordination, because without coordination companies cannot function efficiently.