Your question is OO System High-Level Design. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
High-level design of an object-oriented system (inheritance, polymorphism)
Asked in the Whiteboard technical stage. Explain how you would identify core classes, define relationships, use inheritance appropriately, and apply polymorphism so the design remains extensible. Discuss key interfaces, method contracts, and how you would test the design.