The interviewer wants to know you've done some research about their organization prior to the interviewer. It's important to know what you're getting into when applying to different organizations. Research a little history about the organization what they value, are they for profit or a nonprofit, etc. You don't have to know the full history of the program, but is important to know a little bit more than just the name.

For your answer just pull in something from the organization that you've found interesting and pulling a question in would be even better to show the interviewer that you are interested and care.