Welcome to your interview.
The question is on your right: Swift Structs vs Classes. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
What are the differences between structures and classes in Swift, and when would you use each? Please compare value vs reference semantics, inheritance, and how those choices affect state and memory.