Welcome to your interview.
The question is on your right: Design a Usability Study. 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.
Your team is preparing to launch a new product feature and wants to learn whether people can understand and use it without confusion. You have been asked to propose a study plan that will generate actionable feedback before a broader rollout.
How would you design a usability study for a new feature?