solved I’m working on a accounting question and need an explanation

I’m working on a accounting question and need an explanation and answer to help me learn.

The business plan is the firm’s roadmap. By analyzing your plan for marketing, sales, manufacturing, website design, and more, you greatly improve your chances for business success.
Next, a financial institution or other lender will not invest in your company unless you can demonstrate that you have a roadmap to success. Banks want to lessen their risk of default and private investors want a realistic projection for when they will be obtaining a return on their investment.  
Considering there are many potential purposes of a business plan, Discuss what you feel are the top three purposes.
Good business plans generally have between seven and ten sections. List the sections that you feel a good real estate builder’s business plan would have.
What is the one major key to a successful roadmap?