Hi Raghunath, I can give you some general guidelines, but you'll need to fill-in the details for this question.
The first step is to understand the various business-management theories, such as Administrative Management, Human Relations, Organizations, etc. If you don't have a textbook on the subject, you can search the internet for articles about these theories.
The second step is to pick one of the theories. Select a theory that you identify with. If you were in charge of an organization, which approach would you use for managing the business?
The final step is to write an essay about the theory you've chosen. Your answer should outline key attributes of the theory, provide some context (perhaps include a little history of the theory, and compare/contrast it with other theories), and share why you think that theory is the best.
Hope that helps!
Bill