An expository article is usually about explaining something or talking about it. So if it's a true story and you write it like a life story then yes it can be. If it's just a fictional story you want to write then no.
I think it’s the 2nd and 5th one
Answer: Career
Explanation: A job is only for a certain time. A salary is the money you make during your time at a job. A workforce is an area of work multiple people work in. This leaves the only remaining answer as Career.