assignment is to reply to a formal business email,

Your task for this assignment is to reply to a formal business email, and to address the selection criteria outlined in that email. Your response will give the reader (a potential employer) an appraisal of some of the employability skills developed as a result of your completion of the Business Edge program. It is important that you structure the email in a formal business style that gives the reader a clear understanding of the skills and abilities that you have develop as a student of Business Edge.

Australian government guide on addressing Selection Criteria is a Government document designed to assist job applicants with addressing selection criteria.
http://www.bom.gov.au/careers/guide2SC.shtml