List : Which data structure is best for storing students’ attendance (day-by-day)?, You want to store a class list where names may be added later., Set : An app must store unique usernames (no duplicates allowed)., Dictionary : A store wants to quickly find product details using the product ID., Which data structure would you use for a phone contact list and why?”, Tuple: A hospital needs to store fixed emergency hotline numbers that never change.,

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