Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to write white papers [title] Determine your audience. [step] Typically, you won't know your audience personally. However, you should identify as many factors as possible, such as professional needs, educational backgrounds, and job title (s).

Ending1: These aspects will determine how to form your argument. Mold your proposal to be relatable to your audience based on these factors. Ending2: [substeps] It would be difficult to write all this information at once, because word of mouth may reveal hidden weaknesses. Most white papers are too short to include a solid opinion. Ending3: [substeps] You can almost instantly become familiar with your audience once you've gathered their tips. Go to a book store, look up reviews online, or ask a librarian for tips. Ending4: For example, you might focus on gender equality and economics. The audience might use professionals' success as a motivator.

Answer format: ending1/ending2/ending3/ending4