This question is to gauge how well you know about the school; i.e your level of interest. Some schools track interest and use it as a criteria for admission, so you’d do well to do research on the school you’re applying to. Read up the college’s literature and website, and tie it with your interests. Mix those with some reasons of your own, like the fact that it has a close-knit student community. If you can give some specific examples, the interviewer is likely to be impressed with your research.
“How would you contribute to this community?”
Colleges want givers. They want people who are able to add life to their campus. So make sure you let them know how you are going to do it. Talk about your skills, your experiences and your contributions. A good tip is to tell them how you plan to give back to the community; whether it’s tutoring fellow classmates in a subject you are strong at, chartering a new community chapter in the campus or sharing your ideas with fellow students.