This question tests your emotional intelligence, especially concerning how self-aware you are. Therefore, your admissions interviewers are curious about how aligned your opinions are with their observations. That will help them evaluate how realistic your expectations are with your educational pursuits and how likely you are to hold yourself accountable for your actions, especially when you come to face academic setbacks. If you feel you've done well in your performance so far, say so. If you feel you could have done better, clarify how you would have liked to improve. This question provides the opportunity to return to and revise some of your previous answers. Don't waste that opportunity. It will exhibit your determination to succeed.