You will be identifying a system, one that should be familiar to you. The system you are to describe is the process that you use to ensure that you get to work, school, or some appointment at a physical location outside your domicile. You should keep in mind the following definition of a system from MIL-STD 882E (PDF):Links to an external site.

A system is a composite, at any level of complexity, of personnel, procedures, materials, tools, equipment, facilities, and software. The elements of this composite entity are used together in the intended operational or support environment to perform a given task or achieve a specic purpose, support, or mission requirement.