The interviewer would like to know the types of topics and work that interest you the most. Then, they can better gauge where they could place you, or the kinds of assignments you would most like to deliver. Discuss your topics of interest while also ensuring that they align well with some of the work you would be asked to perform in this role. Show enthusiasm for writing and journalism over a handful of topics rather than sticking to just one.
"I read a lot and have an interest in a variety of topics including business, marketing, entrepreneurship, and education. These are topics I know well and can deliver on quickly. With that said, I am great with researching topics I may not know."
"In my current journalism role, I write a great deal on sports, entertainment, and advertising. These topics cover a lot of sub-topics as well which makes me an excellent resource for many types of written projects. No topic is off limits when it comes to research."