Which of the following represents how to create a list in Python?

Creating a list in Python is done using square brackets, which is precisely how the correct choice is formatted. When you use square brackets, you are defining a list data structure that can hold an ordered collection of items, which can be of varying types. These items can be integers, strings, or even other lists, making lists highly flexible for various programming needs.

In the other choices, different data structures are represented. Curly braces denote a set in Python, which is an unordered collection of unique items. Parentheses indicate a tuple, which is also an ordered collection of items but is immutable once created—meaning you cannot change the contents of a tuple. Lastly, simply listing items like "1, 2, 3" without enclosing them in any brackets does not create a Python data structure; instead, it just represents a sequence of values that are not assigned to any variable or stored in a particular data type. Thus, using square brackets for creating a list is distinctly identified and correct in Python.