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A tuple is an immutable data structure, meaning that once it is created, its contents cannot be altered. It is an ordered collection, and each element is declared within parentheses and separated by commas.

Tuples are an immutable data type in Python. Therefore, when you attempt to change or delete a value in a tuple, a 'TypeError' is raised. The immutability of tuples plays a crucial role in maintaining data stability and consistency.

Tuple indexing is the method used to access an element at a specific position in a tuple. In Python, you can access elements of a tuple using square brackets `[]` along with the index number. Negative indexing can be used to access elements from the end of the tuple.

Q.

A. Please choose from the answers below.