How would you rate your previous supervisor? What things did they do well and what things did they do poorly?
Sometimes, the reason we ultimately seek new work is a result of having a poor supervisor. Even if that is the case, you do not want to paint yourself in a bad light by speaking too candidly of a former supervisor. Interviewers might ask this question to better understand what dynamics you do and do not appreciate in a supervisor. This will help them gauge how well you might work with the supervisor you'd have in this role. So, when preparing for this question, outline a list of positives, challenges, and context to provide a balanced response.
"My previous supervisor was very caring and placed a lot of trust in our team, which I loved. She advocated for us when we had a particularly heavy workload and offered to step in and support in order to build teamwork and reduce stress. I would say the one thing that had room for improvement was her consistency with our check-ins. She placed such trust in us that, at times, we wouldn't have meetings with her for several weeks at a time. Of course, we were honored to be so trusted by our supervisor, though consistency in meeting and being able to connect is certainly helpful."