Welcome to your interview.
The question is on your right: Synchronous vs Asynchronous Programming. 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.
Explain the difference between synchronous and asynchronous programming. When would you use each, and what trade-offs come with async code?