What is the key difference between a list and a tuple?
AA list is mutable while a tuple is immutable and cannot be changed after creation
BA list stores mixed data types while a tuple only accepts items of one single type
CA list is ordered while a tuple stores its items in an unpredictable internal order
DA list can be nested while a tuple is limited to a flat sequence of simple values
Why this is the answer
Lists are mutable, tuples immutable — that's the core distinction. Both can hold mixed types (typing isn't the difference), both preserve insertion order, and both support arbitrary nesting.