The interviewer wants to know if you are a leader and if others see you that way as well. Talk about initiatives and accomplishments, your key personality traits, or your presence within your community.
"I recently started a workout club, three days a week, with my friends. They admire me for my discipline, and we have been able to motivate each other by being consistent and showing up to work out together."
"I hope to be seen as a role model because I strive to be a strong example in everything that I do. One way I position my self as a role model is to be the first to try new things, and take a chance on myself and others."
"I am a role model to others and have spent a great deal of time establishing myself as a person who can offer leadership, and sound advice. Currently, I work with Big Brothers/Big Sisters where I am a role model to an 8-year-old boy."