Welcome to your interview.
The question is on your right: Prioritize Market Sizing Variables. 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.
If we are considering expanding our commercial trading footprint into a new geographic market, what quantitative variables would you prioritize in your market-sizing model?