Answer:
C) Ron should send a prospecting letter to see if there are any unadvertised openings
Step-by-step explanation:
Since Ron doesn't see any openings at Gas N Go's website, he should send a prospecting letter to the company.
A prospecting letter is a formal document (along with a resume) that job applicants send to businesses to let them know they are interested in working there. This way the company can consider them in case a future opening shows up.