Focus on one or two of the things listed in the question. You do not need to give detail on all three, especially if you do not have a great deal of experience.

Avoid looking like a deer in the headlights. This question can be a little scary, especially if you're thinking, "But all I did was answer the phone!" You've done something, so make sure you know what that is and don't freeze.

"In my previous role as office manager, I may not have been in a position to increase revenue company-wide, but I did suggest a program to contribute a quarter for a cup of coffee. We had great coffee, and it was expensive to provide to the whole office. I suggested that to mitigate complaints, we phrase it in such a way that if we couldn't make up the cost somehow, we would have to downgrade the coffee. Nobody complained at all; a quarter is a lot better than the three or more bucks they would spend at Starbucks next door! We ended up making about 53/week for fifty employees!"

"At my last job, I recognized that we were using a lot of paper and printer ink. I realized that for drafts, most people were automatically printing "one-sided/color," just for those documents to be edited and thrown away. I suggested to my boss that we ask people to please be diligent, and if they were just going to print out a draft, to select double-sided and black and white settings. I cannot remember exactly the cost savings, but I know we ended up ordering about half our usual amount of paper and colored ink!"

"My company was using an archaic process of file sharing when I started working there. They used flash drives that they handed back and forth to each other to share information. Not only was it time-consuming because one person would have to go up two floors to hand a flash drive to someone else, but errors happened frequently. The company already had OneDrive and MS 365, but we weren't using them. I talked to my boss and suggested we start using the programs we already had. It was slow-going at first, but ultimately everyone got on board."