Approximately how many books have been written on "how to write a business plan"? How many software packages are there that aim to help entrepreneurs to write a business plan? Use data to back up your estimates. Why are there so many?
Find five business plans. What are the common topics covered across all five plans? What are the differences? Choose the one that you believe is the best written and then describe why you believe it is better than the others.
Speak to five entrepreneurs and find out why they have (or do not have) a business plan. For those that do have a business plan, find out when it was written, the purpose for which it was created, and whether it has been used and/or kept up-to-date.
