Welcome to your interview.
The question is on your right: Prepare a Process-and-Impact Portfolio Story. 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.
You're preparing a portfolio presentation for a UX/UI design interview and want one case study to show not just polished screens, but how you worked through the problem and what changed because of your work.
How do you prepare a portfolio story so it highlights both process and impact?