Welcome to your interview.
The question is on your right: Choosing an Approach for Large Data. 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.
Tell me about a time you had to decide how to structure or organize a large, messy dataset for analysis when the right approach wasn't obvious. Walk me through how you evaluated the options, communicated your recommendation, and what impact it had.