"At the moment, I am working on an email campaign for a nonprofit organization. This project is exciting because it blends my two passions: marketing and volunteerism. I most enjoy creating content when I'm passionate about the topic or product and find that my creativity is sparked in those instances. As a long-time customer of your company, I believe in your product line and feel confident my enthusiasm will carry over into the emails I develop."

When answering this question, use the project you're discussing as a way to highlight your interest in marketing and emphasize any relevant skills. For example, mentioning that you have a long history of "favorite projects" indicates this is a career path you're serious about and have a genuine interest in.