For the background (a.k.a. literature review), you will express your comprehensive knowledge about your topic incorporating what you have learned from writing the annotated bibliography and any additional sources you have found since. You should use the very best sources you found.
Check out the Learning Center in Blackboard: go to to Student Resources tab, then click on the Learning Center sub-tab. Look for the Academic Resources section for a link to their Writing Resources.
It's highly recommended that you also schedule an appointment(s) with the Learning Center to review your assignment(s). Sessions are available face-to-face in Summerdale, and online/virtual sessions are also available.
You can access the Learning Center's calendar and make appointments from their Blackboard tab. You can also contact the Learning Center via email at LearningCenter@centralpenn.edu or by calling 717-728-2234.