The Agile Way! Keep it simple and succinct. Just let the interviewer know that Agile is an iterative approach to managing projects.
Highlight that you love Agile because it follows a customer-centric approach whilst closely collaborating with your team members to deliver value for the business in a short period of time.
You can also mention a couple of the things found on this article.
Want to learn more about Agile? Read this EBOOK, listen to this AUDIOBOOK or enroll in this COURSE