Preparing an outline will help you organize your ideas, make sure your message is clear, and will help you

Preparing an outline will help you organize your ideas, make sure your message is clear, and will help you when writing subsequent drafts. In this task, you must prepare a rough working outline for your Business Case. Be sure to include enough detail that someone unfamiliar with your document can
understand its purpose and how your ideas will flow. You will be assessed on the content (supporting information) and the organization (sections and flow of ideas) of your document

https://www.nrcan.gc.ca/sites/www.nrcan.gc.ca/files/emmc/pdf/major_projects_access_e.pdf
(This is an outline so you do not need to answer all the questions on attached pdf file)