If you have not recent courses, the next best option is to consider anything written from a similar academic program, such as the Warrior-Scholar Project, even if this was not a for-credit course and/or no grade was provided. If you have no similar recent academic program, you may consider either requesting an assignment from an instructor, or writing an expository essay on a topic of your choice. It is also helpful if you can explain your circumstances and available options in the application.